401776748 has 12 divisors (see below), whose sum is σ = 704117232. Its totient is φ = 200600400.

The previous prime is 401776721. The next prime is 401776769. The reversal of 401776748 is 847677104.

It is a happy number.

It is a super-2 number, since 2×401776748² = 322849110466911008, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401776699 and 401776708.

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, 68840 + ... + 74447.

It is an arithmetic number, because the mean of its divisors is an integer number (58676436).

Almost surely, 2^401776748 is an apocalyptic number.

It is an amenable number.

401776748 is a deficient number, since it is larger than the sum of its proper divisors (302340484).

401776748 is a wasteful number, since it uses less digits than its factorization.

401776748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143992 (or 143990 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 44.

The square root of 401776748 is about 20044.3694837229. The cubic root of 401776748 is about 737.8956210416.

The spelling of 401776748 in words is "four hundred one million, seven hundred seventy-six thousand, seven hundred forty-eight".