27752028 has 24 divisors (see below), whose sum is σ = 66261888. Its totient is φ = 9035376.

The previous prime is 27751993. The next prime is 27752029. The reversal of 27752028 is 82025772.

It is a super-2 number, since 2×27752028² = 1540350116225568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27752028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27752029) 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, 26376 + ... + 27407.

It is an arithmetic number, because the mean of its divisors is an integer number (2760912).

Almost surely, 2^27752028 is an apocalyptic number.

It is an amenable number.

27752028 is an abundant number, since it is smaller than the sum of its proper divisors (38509860).

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

27752028 is a wasteful number, since it uses less digits than its factorization.

27752028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53833 (or 53831 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 27752028 is about 5268.0193621512. The cubic root of 27752028 is about 302.7598223046.

The spelling of 27752028 in words is "twenty-seven million, seven hundred fifty-two thousand, twenty-eight".