401487928 has 16 divisors (see below), whose sum is σ = 760244760. Its totient is φ = 198756000.

The previous prime is 401487901. The next prime is 401487937. The reversal of 401487928 is 829784104.

It is a super-2 number, since 2×401487928² = 322385112659466368, which contains 22 as substring.

It is a congruent number.

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, 247638 + ... + 249253.

Almost surely, 2^401487928 is an apocalyptic number.

It is an amenable number.

401487928 is a deficient number, since it is larger than the sum of its proper divisors (358756832).

401487928 is a wasteful number, since it uses less digits than its factorization.

401487928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496998 (or 496994 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 401487928 is about 20037.1636715379. The cubic root of 401487928 is about 737.7187648629.

The spelling of 401487928 in words is "four hundred one million, four hundred eighty-seven thousand, nine hundred twenty-eight".