27220761 has 24 divisors (see below), whose sum is σ = 40884480. Its totient is φ = 17438400.

The previous prime is 27220733. The next prime is 27220777. The reversal of 27220761 is 16702272.

It is not a de Polignac number, because 27220761 - 2⁵ = 27220729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27220261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25680 + ... + 26718.

It is an arithmetic number, because the mean of its divisors is an integer number (1703520).

Almost surely, 2^27220761 is an apocalyptic number.

It is an amenable number.

27220761 is a deficient number, since it is larger than the sum of its proper divisors (13663719).

27220761 is a wasteful number, since it uses less digits than its factorization.

27220761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157 (or 1154 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 27220761 is about 5217.3519145252. The cubic root of 27220761 is about 300.8154149866.

The spelling of 27220761 in words is "twenty-seven million, two hundred twenty thousand, seven hundred sixty-one".