27765040 has 20 divisors (see below), whose sum is σ = 64553904. Its totient is φ = 11105984.

The previous prime is 27765037. The next prime is 27765041. The reversal of 27765040 is 4056772.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 27764993 and 27765011.

It is not an unprimeable number, because it can be changed into a prime (27765041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173452 + ... + 173611.

Almost surely, 2^27765040 is an apocalyptic number.

27765040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27765040 is an abundant number, since it is smaller than the sum of its proper divisors (36788864).

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

27765040 is a wasteful number, since it uses less digits than its factorization.

27765040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347076 (or 347070 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 27765040 is about 5269.2542166800. The cubic root of 27765040 is about 302.8071329044.

The spelling of 27765040 in words is "twenty-seven million, seven hundred sixty-five thousand, forty".