401636022 has 32 divisors (see below), whose sum is σ = 874713600. Its totient is φ = 122457888.

The previous prime is 401636021. The next prime is 401636029. The reversal of 401636022 is 220636104.

It is a super-2 number, since 2×401636022² = 322622988335968968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401635983 and 401636001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401636021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57438 + ... + 64049.

It is an arithmetic number, because the mean of its divisors is an integer number (27334800).

Almost surely, 2^401636022 is an apocalyptic number.

401636022 is an abundant number, since it is smaller than the sum of its proper divisors (473077578).

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

401636022 is a wasteful number, since it uses less digits than its factorization.

401636022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121540.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 401636022 is about 20040.8588139331. The cubic root of 401636022 is about 737.8094594059.

The spelling of 401636022 in words is "four hundred one million, six hundred thirty-six thousand, twenty-two".