721090352 has 10 divisors (see below), whose sum is σ = 1397112588. Its totient is φ = 360545168.

The previous prime is 721090301. The next prime is 721090367. The reversal of 721090352 is 253090127.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22534058 + ... + 22534089.

Almost surely, 2^721090352 is an apocalyptic number.

It is an amenable number.

721090352 is a deficient number, since it is larger than the sum of its proper divisors (676022236).

721090352 is a wasteful number, since it uses less digits than its factorization.

721090352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45068155 (or 45068149 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 721090352 is about 26853.1255536483. The cubic root of 721090352 is about 896.7331571011.

The spelling of 721090352 in words is "seven hundred twenty-one million, ninety thousand, three hundred fifty-two".