27900728 has 16 divisors (see below), whose sum is σ = 53051760. Its totient is φ = 13753600.

The previous prime is 27900647. The next prime is 27900739. The reversal of 27900728 is 82700972.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23993 + ... + 25128.

It is an arithmetic number, because the mean of its divisors is an integer number (3315735).

Almost surely, 2^27900728 is an apocalyptic number.

It is an amenable number.

27900728 is a deficient number, since it is larger than the sum of its proper divisors (25151032).

27900728 is a wasteful number, since it uses less digits than its factorization.

27900728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49198 (or 49194 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 27900728 is about 5282.1139707507. The cubic root of 27900728 is about 303.2996052611.

The spelling of 27900728 in words is "twenty-seven million, nine hundred thousand, seven hundred twenty-eight".