404767872 has 48 divisors (see below), whose sum is σ = 1164765030. Its totient is φ = 134922240.

The previous prime is 404767859. The next prime is 404767889. The reversal of 404767872 is 278767404.

404767872 is a `hidden beast` number, since 40 + 476 + 78 + 72 = 666.

It can be written as a sum of positive squares in only one way, i.e., 297769536 + 106998336 = 17256^2 + 10344^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 174529 + ... + 176832.

Almost surely, 2^404767872 is an apocalyptic number.

It is an amenable number.

404767872 is an abundant number, since it is smaller than the sum of its proper divisors (759997158).

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

404767872 is a wasteful number, since it uses less digits than its factorization.

404767872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351381 (or 351366 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 45.

The square root of 404767872 is about 20118.8437043484. The cubic root of 404767872 is about 739.7222429698.

The spelling of 404767872 in words is "four hundred four million, seven hundred sixty-seven thousand, eight hundred seventy-two".