27420904 has 16 divisors (see below), whose sum is σ = 58759200. Its totient is φ = 11751792.

The previous prime is 27420893. The next prime is 27420907. The reversal of 27420904 is 40902472.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (27420907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244774 + ... + 244885.

It is an arithmetic number, because the mean of its divisors is an integer number (3672450).

Almost surely, 2^27420904 is an apocalyptic number.

It is an amenable number.

27420904 is an abundant number, since it is smaller than the sum of its proper divisors (31338296).

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

27420904 is a wasteful number, since it uses less digits than its factorization.

27420904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489672 (or 489668 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 27420904 is about 5236.4973025869. The cubic root of 27420904 is about 301.5508725362.

The spelling of 27420904 in words is "twenty-seven million, four hundred twenty thousand, nine hundred four".