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156164980 = 22531251879
BaseRepresentation
bin10010100111011…
…10001101110100
3101212212000002011
421103232031310
5304434234410
623255054004
73604244326
oct1123561564
9355760064
10156164980
1180173074
1244371304
132647a01a
1416a51616
15da9b18a
hex94ee374

156164980 has 24 divisors (see below), whose sum is σ = 338526720. Its totient is φ = 60450720.

The previous prime is 156164951. The next prime is 156164989. The reversal of 156164980 is 89461651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156164989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125320 + ... + 126559.

It is an arithmetic number, because the mean of its divisors is an integer number (14105280).

Almost surely, 2156164980 is an apocalyptic number.

156164980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156164980 is an abundant number, since it is smaller than the sum of its proper divisors (182361740).

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

156164980 is a wasteful number, since it uses less digits than its factorization.

156164980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251919 (or 251917 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 156164980 is about 12496.5987372565. The cubic root of 156164980 is about 538.5109640973.

The spelling of 156164980 in words is "one hundred fifty-six million, one hundred sixty-four thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 620 251879 503758 1007516 1259395 2518790 5037580 7808249 15616498 31232996 39041245 78082490 156164980