27657040 has 40 divisors (see below), whose sum is σ = 67102848. Its totient is φ = 10581120.

The previous prime is 27657029. The next prime is 27657061. The reversal of 27657040 is 4075672.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 27656993 and 27657011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5676 + ... + 9355.

Almost surely, 2^27657040 is an apocalyptic number.

27657040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27657040 is an abundant number, since it is smaller than the sum of its proper divisors (39445808).

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

27657040 is a wasteful number, since it uses less digits than its factorization.

27657040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15067 (or 15061 counting only the distinct ones).

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

The square root of 27657040 is about 5258.9961019191. The cubic root of 27657040 is about 302.4140046517.

The spelling of 27657040 in words is "twenty-seven million, six hundred fifty-seven thousand, forty".