156404052 has 72 divisors (see below), whose sum is σ = 466432512. Its totient is φ = 43243200.

The previous prime is 156403997. The next prime is 156404057. The reversal of 156404052 is 250404651.

156404052 is a `hidden beast` number, since 15 + 640 + 4 + 0 + 5 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156404057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2199 + ... + 17822.

Almost surely, 2^156404052 is an apocalyptic number.

156404052 is a gapful number since it is divisible by the number (12) 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 156404052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233216256).

156404052 is an abundant number, since it is smaller than the sum of its proper divisors (310028460).

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

156404052 is a wasteful number, since it uses less digits than its factorization.

156404052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20069 (or 20064 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 156404052 is about 12506.1605618991. The cubic root of 156404052 is about 538.7856250185.

The spelling of 156404052 in words is "one hundred fifty-six million, four hundred four thousand, fifty-two".