401788536 has 16 divisors (see below), whose sum is σ = 1004471400. Its totient is φ = 133929504.

The previous prime is 401788529. The next prime is 401788537. The reversal of 401788536 is 635887104.

It is a super-2 number, since 2×401788536² = 322868055322046592, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401788537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8370571 + ... + 8370618.

Almost surely, 2^401788536 is an apocalyptic number.

It is an amenable number.

401788536 is an abundant number, since it is smaller than the sum of its proper divisors (602682864).

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

401788536 is a wasteful number, since it uses less digits than its factorization.

401788536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16741198 (or 16741194 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 401788536 is about 20044.6635292289. The cubic root of 401788536 is about 737.9028375107.

The spelling of 401788536 in words is "four hundred one million, seven hundred eighty-eight thousand, five hundred thirty-six".