156332440 has 64 divisors (see below), whose sum is σ = 389525760. Its totient is φ = 55989120.

The previous prime is 156332431. The next prime is 156332443. The reversal of 156332440 is 44233651.

It is a junction number, because it is equal to n+sod(n) for n = 156332399 and 156332408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156332443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26829 + ... + 32131.

It is an arithmetic number, because the mean of its divisors is an integer number (6086340).

Almost surely, 2^156332440 is an apocalyptic number.

156332440 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 156332440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194762880).

156332440 is an abundant number, since it is smaller than the sum of its proper divisors (233193320).

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

156332440 is a wasteful number, since it uses less digits than its factorization.

156332440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5392 (or 5388 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 156332440 is about 12503.2971651481. The cubic root of 156332440 is about 538.7033820376.

The spelling of 156332440 in words is "one hundred fifty-six million, three hundred thirty-two thousand, four hundred forty".