240156820 has 24 divisors (see below), whose sum is σ = 504620928. Its totient is φ = 96007200.

The previous prime is 240156811. The next prime is 240156821. The reversal of 240156820 is 28651042.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240156821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63585 + ... + 67255.

It is an arithmetic number, because the mean of its divisors is an integer number (21025872).

Almost surely, 2^240156820 is an apocalyptic number.

240156820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240156820 is an abundant number, since it is smaller than the sum of its proper divisors (264464108).

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

240156820 is a wasteful number, since it uses less digits than its factorization.

240156820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6951 (or 6949 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 240156820 is about 15496.9939020444. The cubic root of 240156820 is about 621.5818262209.

The spelling of 240156820 in words is "two hundred forty million, one hundred fifty-six thousand, eight hundred twenty".