396728470322 has 18 divisors (see below), whose sum is σ = 597762180183. Its totient is φ = 197478372352.

The previous prime is 396728470261. The next prime is 396728470343. The reversal of 396728470322 is 223074827693.

It can be written as a sum of positive squares in 5 ways, for example, as 383905399201 + 12823071121 = 619601^2 + 113239^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=445381.

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, 228924968 + ... + 228926700.

Almost surely, 2^396728470322 is an apocalyptic number.

396728470322 is a deficient number, since it is larger than the sum of its proper divisors (201033709861).

396728470322 is an frugal number, since it uses more digits than its factorization.

396728470322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3982 (or 1992 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 53.

The spelling of 396728470322 in words is "three hundred ninety-six billion, seven hundred twenty-eight million, four hundred seventy thousand, three hundred twenty-two".