27920444 has 12 divisors (see below), whose sum is σ = 49900704. Its totient is φ = 13663104.

The previous prime is 27920437. The next prime is 27920447. The reversal of 27920444 is 44402972.

It is a self number, because there is not a number n which added to its sum of digits gives 27920444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27920447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74069 + ... + 74444.

It is an arithmetic number, because the mean of its divisors is an integer number (4158392).

Almost surely, 2^27920444 is an apocalyptic number.

It is an amenable number.

27920444 is a deficient number, since it is larger than the sum of its proper divisors (21980260).

27920444 is a wasteful number, since it uses less digits than its factorization.

27920444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148564 (or 148562 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 27920444 is about 5283.9799394017. The cubic root of 27920444 is about 303.3710304825.

The spelling of 27920444 in words is "twenty-seven million, nine hundred twenty thousand, four hundred forty-four".