232615540 has 12 divisors (see below), whose sum is σ = 488492676. Its totient is φ = 93046208.

The previous prime is 232615531. The next prime is 232615541. The reversal of 232615540 is 45516232.

It can be written as a sum of positive squares in 2 ways, for example, as 23697424 + 208918116 = 4868^2 + 14454^2 .

It is a junction number, because it is equal to n+sod(n) for n = 232615499 and 232615508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232615541) 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, 5815369 + ... + 5815408.

It is an arithmetic number, because the mean of its divisors is an integer number (40707723).

Almost surely, 2^232615540 is an apocalyptic number.

232615540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

232615540 is an abundant number, since it is smaller than the sum of its proper divisors (255877136).

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

232615540 is a wasteful number, since it uses less digits than its factorization.

232615540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11630786 (or 11630784 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 232615540 is about 15251.7389172514. The cubic root of 232615540 is about 615.0063145186.

The spelling of 232615540 in words is "two hundred thirty-two million, six hundred fifteen thousand, five hundred forty".