27964856 has 8 divisors (see below), whose sum is σ = 52434120. Its totient is φ = 13982424.

The previous prime is 27964843. The next prime is 27964861. The reversal of 27964856 is 65846972.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×27964856² = 1564066342201472, 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 27964856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1747796 + ... + 1747811.

It is an arithmetic number, because the mean of its divisors is an integer number (6554265).

Almost surely, 2^27964856 is an apocalyptic number.

It is an amenable number.

27964856 is a deficient number, since it is larger than the sum of its proper divisors (24469264).

27964856 is a wasteful number, since it uses less digits than its factorization.

27964856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3495613 (or 3495609 counting only the distinct ones).

The product of its digits is 725760, while the sum is 47.

The square root of 27964856 is about 5288.1807835966. The cubic root of 27964856 is about 303.5317988986.

The spelling of 27964856 in words is "twenty-seven million, nine hundred sixty-four thousand, eight hundred fifty-six".