156135728 has 40 divisors (see below), whose sum is σ = 350906112. Its totient is φ = 65913408.

The previous prime is 156135719. The next prime is 156135731. The reversal of 156135728 is 827531651.

It is a junction number, because it is equal to n+sod(n) for n = 156135691 and 156135700.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2900 + ... + 17907.

Almost surely, 2^156135728 is an apocalyptic number.

It is an amenable number.

156135728 is an abundant number, since it is smaller than the sum of its proper divisors (194770384).

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

156135728 is a wasteful number, since it uses less digits than its factorization.

156135728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20889 (or 20883 counting only the distinct ones).

The product of its digits is 50400, while the sum is 38.

The square root of 156135728 is about 12495.4282839765. The cubic root of 156135728 is about 538.4773383203.

The spelling of 156135728 in words is "one hundred fifty-six million, one hundred thirty-five thousand, seven hundred twenty-eight".