27988998 has 16 divisors (see below), whose sum is σ = 56122416. Its totient is φ = 9305600.

The previous prime is 27988991. The next prime is 27989009. The reversal of 27988998 is 89988972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27988991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3411 + ... + 8222.

It is an arithmetic number, because the mean of its divisors is an integer number (3507651).

Almost surely, 2^27988998 is an apocalyptic number.

27988998 is an abundant number, since it is smaller than the sum of its proper divisors (28133418).

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

27988998 is a wasteful number, since it uses less digits than its factorization.

27988998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12039.

The product of its digits is 5225472, while the sum is 60.

The square root of 27988998 is about 5290.4629287048. The cubic root of 27988998 is about 303.6191198917.

The spelling of 27988998 in words is "twenty-seven million, nine hundred eighty-eight thousand, nine hundred ninety-eight".