721362532 has 12 divisors (see below), whose sum is σ = 1377146736. Its totient is φ = 327892040.

The previous prime is 721362527. The next prime is 721362541. The reversal of 721362532 is 235263127.

It is a junction number, because it is equal to n+sod(n) for n = 721362494 and 721362503.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8197258 + ... + 8197345.

It is an arithmetic number, because the mean of its divisors is an integer number (114762228).

Almost surely, 2^721362532 is an apocalyptic number.

It is an amenable number.

721362532 is a deficient number, since it is larger than the sum of its proper divisors (655784204).

721362532 is a wasteful number, since it uses less digits than its factorization.

721362532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16394618 (or 16394616 counting only the distinct ones).

The product of its digits is 15120, while the sum is 31.

The square root of 721362532 is about 26858.1930144230. The cubic root of 721362532 is about 896.8459687285.

The spelling of 721362532 in words is "seven hundred twenty-one million, three hundred sixty-two thousand, five hundred thirty-two".