401655772 has 24 divisors (see below), whose sum is σ = 808640000. Its totient is φ = 170996400.

The previous prime is 401655743. The next prime is 401655797. The reversal of 401655772 is 277556104.

It is a super-2 number, since 2×401655772² = 322654718361831968, 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 7 ways as a sum of consecutive naturals, for example, 43272 + ... + 51727.

Almost surely, 2^401655772 is an apocalyptic number.

It is an amenable number.

401655772 is an abundant number, since it is smaller than the sum of its proper divisors (406984228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401655772 is a wasteful number, since it uses less digits than its factorization.

401655772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95161 (or 95159 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 401655772 is about 20041.3515512303. The cubic root of 401655772 is about 737.8215528580.

The spelling of 401655772 in words is "four hundred one million, six hundred fifty-five thousand, seven hundred seventy-two".