156404 has 12 divisors (see below), whose sum is σ = 278628. Its totient is φ = 76800.

The previous prime is 156371. The next prime is 156419. The reversal of 156404 is 404651.

It is a happy number.

156404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 67600 + 88804 = 260^2 + 298^2 .

It is a super-2 number, since 2×156404² = 48924422432, which contains 22 as substring.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

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, 77 + ... + 564.

It is an arithmetic number, because the mean of its divisors is an integer number (23219).

2¹⁵⁶⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

156404 is a deficient number, since it is larger than the sum of its proper divisors (122224).

156404 is a wasteful number, since it uses less digits than its factorization.

156404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706 (or 704 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 156404 is about 395.4794558507. The cubic root of 156404 is about 53.8785565308.

The spelling of 156404 in words is "one hundred fifty-six thousand, four hundred four".