505427904 has 56 divisors (see below), whose sum is σ = 1485869520. Its totient is φ = 168475392.

The previous prime is 505427903. The next prime is 505427933. The reversal of 505427904 is 409724505.

It is a super-2 number, since 2×505427904² = 510914732283666432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505427903) 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, 144519 + ... + 147974.

Almost surely, 2^505427904 is an apocalyptic number.

505427904 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

505427904 is an abundant number, since it is smaller than the sum of its proper divisors (980441616).

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

505427904 is a wasteful number, since it uses less digits than its factorization.

505427904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292514 (or 292498 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 505427904 is about 22481.7237773263. The cubic root of 505427904 is about 796.5622821127.

The spelling of 505427904 in words is "five hundred five million, four hundred twenty-seven thousand, nine hundred four".