27765740 has 12 divisors (see below), whose sum is σ = 58308096. Its totient is φ = 11106288.

The previous prime is 27765721. The next prime is 27765763. The reversal of 27765740 is 4756772.

It is a junction number, because it is equal to n+sod(n) for n = 27765694 and 27765703.

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, 694124 + ... + 694163.

It is an arithmetic number, because the mean of its divisors is an integer number (4859008).

Almost surely, 2^27765740 is an apocalyptic number.

27765740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27765740 is an abundant number, since it is smaller than the sum of its proper divisors (30542356).

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

27765740 is a wasteful number, since it uses less digits than its factorization.

27765740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388296 (or 1388294 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 38.

The square root of 27765740 is about 5269.3206393234. The cubic root of 27765740 is about 302.8096776298.

The spelling of 27765740 in words is "twenty-seven million, seven hundred sixty-five thousand, seven hundred forty".