27957828 has 12 divisors (see below), whose sum is σ = 65234960. Its totient is φ = 9319272.

The previous prime is 27957823. The next prime is 27957833. The reversal of 27957828 is 82875972.

It is an interprime number because it is at equal distance from previous prime (27957823) and next prime (27957833).

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (27957821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1164898 + ... + 1164921.

Almost surely, 2^27957828 is an apocalyptic number.

It is an amenable number.

27957828 is an abundant number, since it is smaller than the sum of its proper divisors (37277132).

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

27957828 is a wasteful number, since it uses less digits than its factorization.

27957828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2329826 (or 2329824 counting only the distinct ones).

The product of its digits is 564480, while the sum is 48.

The square root of 27957828 is about 5287.5162411098. The cubic root of 27957828 is about 303.5063693593.

The spelling of 27957828 in words is "twenty-seven million, nine hundred fifty-seven thousand, eight hundred twenty-eight".