232644640 has 24 divisors (see below), whose sum is σ = 549623340. Its totient is φ = 93057792.

The previous prime is 232644631. The next prime is 232644679. The reversal of 232644640 is 46446232.

It can be written as a sum of positive squares in 2 ways, for example, as 221057424 + 11587216 = 14868^2 + 3404^2 .

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 3 ways as a sum of consecutive naturals, for example, 726855 + ... + 727174.

Almost surely, 2^232644640 is an apocalyptic number.

232644640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

232644640 is an abundant number, since it is smaller than the sum of its proper divisors (316978700).

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

232644640 is a wasteful number, since it uses less digits than its factorization.

232644640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454044 (or 1454036 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

The square root of 232644640 is about 15252.6928769972. The cubic root of 232644640 is about 615.0319590328.

The spelling of 232644640 in words is "two hundred thirty-two million, six hundred forty-four thousand, six hundred forty".