27680751 has 32 divisors (see below), whose sum is σ = 47201280. Its totient is φ = 15704928.

The previous prime is 27680747. The next prime is 27680759. The reversal of 27680751 is 15708672.

It is not a de Polignac number, because 27680751 - 2² = 27680747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27680759) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31125 + ... + 32001.

It is an arithmetic number, because the mean of its divisors is an integer number (1475040).

Almost surely, 2^27680751 is an apocalyptic number.

27680751 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

27680751 is the 2631-st decagonal number.

27680751 is a deficient number, since it is larger than the sum of its proper divisors (19520529).

27680751 is a wasteful number, since it uses less digits than its factorization.

27680751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060 (or 1054 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 27680751 is about 5261.2499465431. The cubic root of 27680751 is about 302.5004020667.

The spelling of 27680751 in words is "twenty-seven million, six hundred eighty thousand, seven hundred fifty-one".