27798904 has 64 divisors (see below), whose sum is σ = 63037440. Its totient is φ = 11235840.

The previous prime is 27798899. The next prime is 27798913. The reversal of 27798904 is 40989772.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145449 + ... + 145639.

It is an arithmetic number, because the mean of its divisors is an integer number (984960).

Almost surely, 2^27798904 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 27798904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31518720).

27798904 is an abundant number, since it is smaller than the sum of its proper divisors (35238536).

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

27798904 is a wasteful number, since it uses less digits than its factorization.

27798904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 27798904 is about 5272.4665954371. The cubic root of 27798904 is about 302.9301904695.

The spelling of 27798904 in words is "twenty-seven million, seven hundred ninety-eight thousand, nine hundred four".