232528139940 has 48 divisors (see below), whose sum is σ = 672081338880. Its totient is φ = 60007261440.

The previous prime is 232528139933. The next prime is 232528139957. The reversal of 232528139940 is 49931825232.

It is a self number, because there is not a number n which added to its sum of digits gives 232528139940.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62505705 + ... + 62509424.

It is an arithmetic number, because the mean of its divisors is an integer number (14001694560).

Almost surely, 2^232528139940 is an apocalyptic number.

232528139940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

232528139940 is an abundant number, since it is smaller than the sum of its proper divisors (439553198940).

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

232528139940 is a wasteful number, since it uses less digits than its factorization.

232528139940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125015172 (or 125015170 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 48.

The spelling of 232528139940 in words is "two hundred thirty-two billion, five hundred twenty-eight million, one hundred thirty-nine thousand, nine hundred forty".