232528815 has 24 divisors (see below), whose sum is σ = 416950560. Its totient is φ = 119738304.

The previous prime is 232528811. The next prime is 232528817. The reversal of 232528815 is 518825232.

It is not a de Polignac number, because 232528815 - 2² = 232528811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 232528815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232528811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87787 + ... + 90396.

It is an arithmetic number, because the mean of its divisors is an integer number (17372940).

Almost surely, 2^232528815 is an apocalyptic number.

232528815 is a deficient number, since it is larger than the sum of its proper divisors (184421745).

232528815 is a wasteful number, since it uses less digits than its factorization.

232528815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178223 (or 178220 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 232528815 is about 15248.8955337756. The cubic root of 232528815 is about 614.9298750105.

The spelling of 232528815 in words is "two hundred thirty-two million, five hundred twenty-eight thousand, eight hundred fifteen".