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117957120 = 293515359
BaseRepresentation
bin1110000011111…
…10001000000000
322012221211202020
413001332020000
5220144111440
615412121440
72631422211
oct701761000
9265854666
10117957120
1160646a26
1233606280
131b590118
1411947408
15a5503d0
hex707e200

117957120 has 80 divisors (see below), whose sum is σ = 377118720. Its totient is φ = 31453184.

The previous prime is 117957097. The next prime is 117957131. The reversal of 117957120 is 21759711.

117957120 is a nontrivial binomial coefficient, being equal to C(15360, 2).

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1 + ... + 15359.

It is an arithmetic number, because the mean of its divisors is an integer number (4713984).

Almost surely, 2117957120 is an apocalyptic number.

117957120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

117957120 is the 15359-th triangular number and also the 7680-th hexagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117957120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188559360).

117957120 is an abundant number, since it is smaller than the sum of its proper divisors (259161600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117957120 is an equidigital number, since it uses as much as digits as its factorization.

117957120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15385 (or 15369 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 33.

The square root of 117957120 is about 10860.8065998801. The cubic root of 117957120 is about 490.4273933143.

It can be divided in two parts, 11795 and 7120, that added together give a triangular number (18915 = T194).

The spelling of 117957120 in words is "one hundred seventeen million, nine hundred fifty-seven thousand, one hundred twenty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 128 160 192 240 256 320 384 480 512 640 768 960 1280 1536 1920 2560 3840 7680 15359 30718 46077 61436 76795 92154 122872 153590 184308 230385 245744 307180 368616 460770 491488 614360 737232 921540 982976 1228720 1474464 1843080 1965952 2457440 2948928 3686160 3931904 4914880 5897856 7372320 7863808 9829760 11795712 14744640 19659520 23591424 29489280 39319040 58978560 117957120