27628540 has 12 divisors (see below), whose sum is σ = 58019976. Its totient is φ = 11051408.

The previous prime is 27628511. The next prime is 27628567. The reversal of 27628540 is 4582672.

It is a junction number, because it is equal to n+sod(n) for n = 27628496 and 27628505.

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, 690694 + ... + 690733.

It is an arithmetic number, because the mean of its divisors is an integer number (4834998).

Almost surely, 2^27628540 is an apocalyptic number.

27628540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27628540 is an abundant number, since it is smaller than the sum of its proper divisors (30391436).

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

27628540 is a wasteful number, since it uses less digits than its factorization.

27628540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381436 (or 1381434 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 27628540 is about 5256.2857608772. The cubic root of 27628540 is about 302.3100918526.

The spelling of 27628540 in words is "twenty-seven million, six hundred twenty-eight thousand, five hundred forty".