156464440 has 64 divisors (see below), whose sum is σ = 396472320. Its totient is φ = 55056000.

The previous prime is 156464431. The next prime is 156464459. The reversal of 156464440 is 44464651.

156464440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×156464440² = 48962241969027200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 156464396 and 156464405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7905 + ... + 19375.

It is an arithmetic number, because the mean of its divisors is an integer number (6194880).

Almost surely, 2^156464440 is an apocalyptic number.

156464440 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 156464440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198236160).

156464440 is an abundant number, since it is smaller than the sum of its proper divisors (240007880).

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

156464440 is a wasteful number, since it uses less digits than its factorization.

156464440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11524 (or 11520 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 156464440 is about 12508.5746590089. The cubic root of 156464440 is about 538.8549582601.

The spelling of 156464440 in words is "one hundred fifty-six million, four hundred sixty-four thousand, four hundred forty".