401565436 has 24 divisors (see below), whose sum is σ = 733788720. Its totient is φ = 192041472.

The previous prime is 401565431. The next prime is 401565473. The reversal of 401565436 is 634565104.

It is a super-2 number, since 2×401565436² = 322509598779740192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401565431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3765 + ... + 28588.

It is an arithmetic number, because the mean of its divisors is an integer number (30574530).

Almost surely, 2^401565436 is an apocalyptic number.

It is an amenable number.

401565436 is a deficient number, since it is larger than the sum of its proper divisors (332223284).

401565436 is a wasteful number, since it uses less digits than its factorization.

401565436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32493 (or 32491 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 401565436 is about 20039.0976842771. The cubic root of 401565436 is about 737.7662344735.

The spelling of 401565436 in words is "four hundred one million, five hundred sixty-five thousand, four hundred thirty-six".