156428523 has 36 divisors (see below), whose sum is σ = 242939320. Its totient is φ = 99476496.

The previous prime is 156428491. The next prime is 156428551. The reversal of 156428523 is 325824651.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

156428523 is a `hidden beast` number, since 1 + 5 + 642 + 8 + 5 + 2 + 3 = 666.

It is not a de Polignac number, because 156428523 - 2⁵ = 156428491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156428423) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1884640 + ... + 1884722.

Almost surely, 2^156428523 is an apocalyptic number.

156428523 is a deficient number, since it is larger than the sum of its proper divisors (86510797).

156428523 is an frugal number, since it uses more digits than its factorization.

156428523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 115 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 156428523 is about 12507.1388814549. The cubic root of 156428523 is about 538.8137230447.

The spelling of 156428523 in words is "one hundred fifty-six million, four hundred twenty-eight thousand, five hundred twenty-three".