27978036 has 48 divisors (see below), whose sum is σ = 68006400. Its totient is φ = 8944992.

The previous prime is 27978029. The next prime is 27978043. The reversal of 27978036 is 63087972.

It is an interprime number because it is at equal distance from previous prime (27978029) and next prime (27978043).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29985 + ... + 30903.

It is an arithmetic number, because the mean of its divisors is an integer number (1416800).

Almost surely, 2^27978036 is an apocalyptic number.

It is an amenable number.

27978036 is an abundant number, since it is smaller than the sum of its proper divisors (40028364).

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

27978036 is a wasteful number, since it uses less digits than its factorization.

27978036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028 (or 1026 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 27978036 is about 5289.4268120468. The cubic root of 27978036 is about 303.5794768458.

The spelling of 27978036 in words is "twenty-seven million, nine hundred seventy-eight thousand, thirty-six".