156660400 has 120 divisors (see below), whose sum is σ = 414598464. Its totient is φ = 56524800.

The previous prime is 156660319. The next prime is 156660419. The reversal of 156660400 is 4066651.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 244080 + ... + 244720.

Almost surely, 2^156660400 is an apocalyptic number.

156660400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156660400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207299232).

156660400 is an abundant number, since it is smaller than the sum of its proper divisors (257938064).

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

156660400 is a wasteful number, since it uses less digits than its factorization.

156660400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719 (or 708 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 156660400 is about 12516.4052347309. The cubic root of 156660400 is about 539.0798229118.

The spelling of 156660400 in words is "one hundred fifty-six million, six hundred sixty thousand, four hundred".