156020640 has 48 divisors (see below), whose sum is σ = 491466528. Its totient is φ = 41605376.

The previous prime is 156020597. The next prime is 156020653. The reversal of 156020640 is 46020651.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 156020640.

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 7 ways as a sum of consecutive naturals, for example, 162042 + ... + 163001.

It is an arithmetic number, because the mean of its divisors is an integer number (10238886).

Almost surely, 2^156020640 is an apocalyptic number.

156020640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156020640 is an abundant number, since it is smaller than the sum of its proper divisors (335445888).

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

156020640 is a wasteful number, since it uses less digits than its factorization.

156020640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325061 (or 325053 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 156020640 is about 12490.8222307421. The cubic root of 156020640 is about 538.3450015097.

The spelling of 156020640 in words is "one hundred fifty-six million, twenty thousand, six hundred forty".