27906970 has 72 divisors (see below), whose sum is σ = 63462204. Its totient is φ = 8805888.

The previous prime is 27906959. The next prime is 27906971. The reversal of 27906970 is 7960972.

It can be written as a sum of positive squares in 6 ways, for example, as 1147041 + 26759929 = 1071^2 + 5173^2 .

It is not an unprimeable number, because it can be changed into a prime (27906971) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 82642 + ... + 82978.

Almost surely, 2^27906970 is an apocalyptic number.

27906970 is an abundant number, since it is smaller than the sum of its proper divisors (35555234).

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

27906970 is a wasteful number, since it uses less digits than its factorization.

27906970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 27906970 is about 5282.7047996268. The cubic root of 27906970 is about 303.3222218152.

The spelling of 27906970 in words is "twenty-seven million, nine hundred six thousand, nine hundred seventy".