401415928 has 8 divisors (see below), whose sum is σ = 752654880. Its totient is φ = 200707960.

The previous prime is 401415877. The next prime is 401415943. The reversal of 401415928 is 829514104.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×401415928² = 322269494504202368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401415893 and 401415902.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25088488 + ... + 25088503.

It is an arithmetic number, because the mean of its divisors is an integer number (94081860).

Almost surely, 2^401415928 is an apocalyptic number.

It is an amenable number.

401415928 is a deficient number, since it is larger than the sum of its proper divisors (351238952).

401415928 is a wasteful number, since it uses less digits than its factorization.

401415928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50176997 (or 50176993 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 401415928 is about 20035.3669295074. The cubic root of 401415928 is about 737.6746631412.

The spelling of 401415928 in words is "four hundred one million, four hundred fifteen thousand, nine hundred twenty-eight".