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122902980 = 22351273
BaseRepresentation
bin1110101001101…
…01100111000100
322120021010012020
413110311213010
5222430343410
620110123140
73021441504
oct724654704
9276233166
10122902980
1163414912
12351b04b0
131c602375
1412473a04
15abcaa70
hex75359c4

122902980 has 48 divisors (see below), whose sum is σ = 346859520. Its totient is φ = 32516064.

The previous prime is 122902973. The next prime is 122903009. The reversal of 122902980 is 89209221.

It is a happy number.

It is a Saint-Exupery number, since it is equal to the product of the sides of a Pythagorean triangle: 635 × 381 × 508.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 967677 + ... + 967803.

It is an arithmetic number, because the mean of its divisors is an integer number (7226240).

Almost surely, 2122902980 is an apocalyptic number.

122902980 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 122902980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173429760).

122902980 is an abundant number, since it is smaller than the sum of its proper divisors (223956540).

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

122902980 is an frugal number, since it uses more digits than its factorization.

122902980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 122902980 is about 11086.1616441400. The cubic root of 122902980 is about 497.1881904284.

The spelling of 122902980 in words is "one hundred twenty-two million, nine hundred two thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 127 254 381 508 635 762 1270 1524 1905 2540 3810 7620 16129 32258 48387 64516 80645 96774 161290 193548 241935 322580 483870 967740 2048383 4096766 6145149 8193532 10241915 12290298 20483830 24580596 30725745 40967660 61451490 122902980