27964428 has 24 divisors (see below), whose sum is σ = 68685120. Its totient is φ = 8830800.

The previous prime is 27964403. The next prime is 27964429. The reversal of 27964428 is 82446972.

It is a self number, because there is not a number n which added to its sum of digits gives 27964428.

It is not an unprimeable number, because it can be changed into a prime (27964429) 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 7 ways as a sum of consecutive naturals, for example, 61098 + ... + 61553.

It is an arithmetic number, because the mean of its divisors is an integer number (2861880).

Almost surely, 2^27964428 is an apocalyptic number.

It is an amenable number.

27964428 is an abundant number, since it is smaller than the sum of its proper divisors (40720692).

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

27964428 is a wasteful number, since it uses less digits than its factorization.

27964428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122677 (or 122675 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 27964428 is about 5288.1403158388. The cubic root of 27964428 is about 303.5302503803.

The spelling of 27964428 in words is "twenty-seven million, nine hundred sixty-four thousand, four hundred twenty-eight".