401629328 has 20 divisors (see below), whose sum is σ = 785864508. Its totient is φ = 198825600.

The previous prime is 401629313. The next prime is 401629379. The reversal of 401629328 is 823926104.

It can be written as a sum of positive squares in 2 ways, for example, as 393149584 + 8479744 = 19828^2 + 2912^2 .

It is a super-2 number, since 2×401629328² = 322612234219463168, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

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, 122651 + ... + 125882.

Almost surely, 2^401629328 is an apocalyptic number.

It is an amenable number.

401629328 is a deficient number, since it is larger than the sum of its proper divisors (384235180).

401629328 is a wasteful number, since it uses less digits than its factorization.

401629328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248642 (or 248636 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 401629328 is about 20040.6918044263. The cubic root of 401629328 is about 737.8053604011.

The spelling of 401629328 in words is "four hundred one million, six hundred twenty-nine thousand, three hundred twenty-eight".