27404920 has 16 divisors (see below), whose sum is σ = 61661160. Its totient is φ = 10961952.

The previous prime is 27404917. The next prime is 27404929. The reversal of 27404920 is 2940472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27404929) 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, 342522 + ... + 342601.

Almost surely, 2^27404920 is an apocalyptic number.

27404920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27404920 is an abundant number, since it is smaller than the sum of its proper divisors (34256240).

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

27404920 is a wasteful number, since it uses less digits than its factorization.

27404920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685134 (or 685130 counting only the distinct ones).

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

The square root of 27404920 is about 5234.9708690689. The cubic root of 27404920 is about 301.4922685116.

The spelling of 27404920 in words is "twenty-seven million, four hundred four thousand, nine hundred twenty".