396726724 has 27 divisors (see below), whose sum is σ = 727449933. Its totient is φ = 189300672.

The previous prime is 396726709. The next prime is 396726731. The reversal of 396726724 is 427627693.

The square root of 396726724 is 19918.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 44488900 + 352237824 = 6670^2 + 18768^2 .

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 916012 + ... + 916444.

Almost surely, 2^396726724 is an apocalyptic number.

396726724 is the 19918-th square number.

It is an amenable number.

396726724 is a deficient number, since it is larger than the sum of its proper divisors (330723209).

396726724 is an equidigital number, since it uses as much as digits as its factorization.

396726724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916 (or 458 counting only the distinct ones).

The product of its digits is 762048, while the sum is 46.

The cubic root of 396726724 is about 734.7909838046.

The spelling of 396726724 in words is "three hundred ninety-six million, seven hundred twenty-six thousand, seven hundred twenty-four".