155938680 has 192 divisors, whose sum is σ = 532396800. Its totient is φ = 39536640.

The previous prime is 155938669. The next prime is 155938691. The reversal of 155938680 is 86839551.

155938680 is a `hidden beast` number, since 1 + 559 + 38 + 68 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (155938669) and next prime (155938691).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 993162 + ... + 993318.

It is an arithmetic number, because the mean of its divisors is an integer number (2772900).

Almost surely, 2^155938680 is an apocalyptic number.

155938680 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 155938680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266198400).

155938680 is an abundant number, since it is smaller than the sum of its proper divisors (376458120).

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

155938680 is a wasteful number, since it uses less digits than its factorization.

155938680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 155938680 is about 12487.5409909237. The cubic root of 155938680 is about 538.2507180766.

The spelling of 155938680 in words is "one hundred fifty-five million, nine hundred thirty-eight thousand, six hundred eighty".