156413440 has 40 divisors (see below), whose sum is σ = 375031800. Its totient is φ = 62564352.

The previous prime is 156413437. The next prime is 156413449. The reversal of 156413440 is 44314651.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 156413399 and 156413408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156413449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27990 + ... + 33109.

It is an arithmetic number, because the mean of its divisors is an integer number (9375795).

Almost surely, 2^156413440 is an apocalyptic number.

156413440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156413440 is an abundant number, since it is smaller than the sum of its proper divisors (218618360).

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

156413440 is an frugal number, since it uses more digits than its factorization.

156413440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61122 (or 61106 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 156413440 is about 12506.5358912850. The cubic root of 156413440 is about 538.7964048292.

The spelling of 156413440 in words is "one hundred fifty-six million, four hundred thirteen thousand, four hundred forty".