27145656 has 48 divisors (see below), whose sum is σ = 73961160. Its totient is φ = 8994240.

The previous prime is 27145639. The next prime is 27145667. The reversal of 27145656 is 65654172.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 27145656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11991 + ... + 14073.

Almost surely, 2^27145656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27145656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36980580).

27145656 is an abundant number, since it is smaller than the sum of its proper divisors (46815504).

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

27145656 is a wasteful number, since it uses less digits than its factorization.

27145656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2276 (or 2269 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 27145656 is about 5210.1493260750. The cubic root of 27145656 is about 300.5384994827.

The spelling of 27145656 in words is "twenty-seven million, one hundred forty-five thousand, six hundred fifty-six".