1232644540 has 12 divisors (see below), whose sum is σ = 2588553576. Its totient is φ = 493057808.

The previous prime is 1232644531. The next prime is 1232644547. The reversal of 1232644540 is 454462321.

1232644540 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232644547) 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, 30816094 + ... + 30816133.

It is an arithmetic number, because the mean of its divisors is an integer number (215712798).

Almost surely, 2^1232644540 is an apocalyptic number.

1232644540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232644540 is an abundant number, since it is smaller than the sum of its proper divisors (1355909036).

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

1232644540 is a wasteful number, since it uses less digits than its factorization.

1232644540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61632236 (or 61632234 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 1232644540 is about 35109.0378677628. The cubic root of 1232644540 is about 1072.2085978842.

The spelling of 1232644540 in words is "one billion, two hundred thirty-two million, six hundred forty-four thousand, five hundred forty".