27890928 has 120 divisors (see below), whose sum is σ = 86119488. Its totient is φ = 8372736.

The previous prime is 27890923. The next prime is 27890959. The reversal of 27890928 is 82909872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27890921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87826 + ... + 88142.

Almost surely, 2^27890928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27890928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43059744).

27890928 is an abundant number, since it is smaller than the sum of its proper divisors (58228560).

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

27890928 is a wasteful number, since it uses less digits than its factorization.

27890928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 27890928 is about 5281.1862303842. The cubic root of 27890928 is about 303.2640902475.

The spelling of 27890928 in words is "twenty-seven million, eight hundred ninety thousand, nine hundred twenty-eight".