155728624 has 20 divisors (see below), whose sum is σ = 311458240. Its totient is φ = 75352320.

The previous prime is 155728613. The next prime is 155728649. The reversal of 155728624 is 426827551.

155728624 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156489 + ... + 157480.

It is an arithmetic number, because the mean of its divisors is an integer number (15572912).

Almost surely, 2^155728624 is an apocalyptic number.

It is an amenable number.

155728624 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

155728624 is a wasteful number, since it uses less digits than its factorization.

155728624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314008 (or 314002 counting only the distinct ones).

The product of its digits is 134400, while the sum is 40.

The square root of 155728624 is about 12479.1275336059. The cubic root of 155728624 is about 538.0089273128.

The spelling of 155728624 in words is "one hundred fifty-five million, seven hundred twenty-eight thousand, six hundred twenty-four".