404492736 has 28 divisors (see below), whose sum is σ = 1070220872. Its totient is φ = 134830848.

The previous prime is 404492723. The next prime is 404492741. The reversal of 404492736 is 637294404.

It is a super-2 number, since 2×404492736² = 327228746953531392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 404492694 and 404492703.

It is a congruent number.

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, 1053175 + ... + 1053558.

It is an arithmetic number, because the mean of its divisors is an integer number (38222174).

Almost surely, 2^404492736 is an apocalyptic number.

It is an amenable number.

404492736 is an abundant number, since it is smaller than the sum of its proper divisors (665728136).

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

404492736 is a wasteful number, since it uses less digits than its factorization.

404492736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2106748 (or 2106738 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 39.

The square root of 404492736 is about 20112.0047732691. The cubic root of 404492736 is about 739.5545992700.

The spelling of 404492736 in words is "four hundred four million, four hundred ninety-two thousand, seven hundred thirty-six".