156261400 has 24 divisors (see below), whose sum is σ = 363308220. Its totient is φ = 62504480.

The previous prime is 156261383. The next prime is 156261401. The reversal of 156261400 is 4162651.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156261401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 390454 + ... + 390853.

Almost surely, 2^156261400 is an apocalyptic number.

156261400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156261400 is an abundant number, since it is smaller than the sum of its proper divisors (207046820).

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

156261400 is a wasteful number, since it uses less digits than its factorization.

156261400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781323 (or 781314 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 156261400 is about 12500.4559916829. The cubic root of 156261400 is about 538.6217711523.

The spelling of 156261400 in words is "one hundred fifty-six million, two hundred sixty-one thousand, four hundred".