27964540 has 12 divisors (see below), whose sum is σ = 58725576. Its totient is φ = 11185808.

The previous prime is 27964513. The next prime is 27964553. The reversal of 27964540 is 4546972.

It is a self number, because there is not a number n which added to its sum of digits gives 27964540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 699094 + ... + 699133.

It is an arithmetic number, because the mean of its divisors is an integer number (4893798).

Almost surely, 2^27964540 is an apocalyptic number.

27964540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27964540 is an abundant number, since it is smaller than the sum of its proper divisors (30761036).

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

27964540 is a wasteful number, since it uses less digits than its factorization.

27964540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398236 (or 1398234 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 27964540 is about 5288.1509055624. The cubic root of 27964540 is about 303.5306556016.

The spelling of 27964540 in words is "twenty-seven million, nine hundred sixty-four thousand, five hundred forty".