156538398 has 16 divisors (see below), whose sum is σ = 317750400. Its totient is φ = 51400536.

The previous prime is 156538381. The next prime is 156538399. The reversal of 156538398 is 893835651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156538399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194298 + ... + 195101.

It is an arithmetic number, because the mean of its divisors is an integer number (19859400).

Almost surely, 2^156538398 is an apocalyptic number.

156538398 is an abundant number, since it is smaller than the sum of its proper divisors (161212002).

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

156538398 is a wasteful number, since it uses less digits than its factorization.

156538398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389471.

The product of its digits is 777600, while the sum is 48.

The square root of 156538398 is about 12511.5306018089. The cubic root of 156538398 is about 538.9398473195.

The spelling of 156538398 in words is "one hundred fifty-six million, five hundred thirty-eight thousand, three hundred ninety-eight".