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118989460 = 225172691301
BaseRepresentation
bin1110001011110…
…10001010010100
322021220021212001
413011322022110
5220430130320
615450205044
72643252022
oct705721224
9267807761
10118989460
11611915a7
1233a23784
131b861c85
1411b35712
15a6a620a
hex717a294

118989460 has 48 divisors (see below), whose sum is σ = 265764240. Its totient is φ = 44595200.

The previous prime is 118989433. The next prime is 118989491. The reversal of 118989460 is 64989811.

It can be written as a sum of positive squares in 8 ways, for example, as 33500944 + 85488516 = 5788^2 + 9246^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 118989460.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90810 + ... + 92110.

It is an arithmetic number, because the mean of its divisors is an integer number (5536755).

Almost surely, 2118989460 is an apocalyptic number.

118989460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118989460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132882120).

118989460 is an abundant number, since it is smaller than the sum of its proper divisors (146774780).

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

118989460 is a wasteful number, since it uses less digits than its factorization.

118989460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596 (or 1594 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 118989460 is about 10908.2290038301. The cubic root of 118989460 is about 491.8539511860.

The spelling of 118989460 in words is "one hundred eighteen million, nine hundred eighty-nine thousand, four hundred sixty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 269 340 538 1076 1301 1345 2602 2690 4573 5204 5380 6505 9146 13010 18292 22117 22865 26020 44234 45730 88468 91460 110585 221170 349969 442340 699938 1399876 1749845 3499690 5949473 6999380 11898946 23797892 29747365 59494730 118989460