27871970 has 16 divisors (see below), whose sum is σ = 57336768. Its totient is φ = 9556080.

The previous prime is 27871967. The next prime is 27871979. The reversal of 27871970 is 7917872.

It is not an unprimeable number, because it can be changed into a prime (27871979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199016 + ... + 199155.

It is an arithmetic number, because the mean of its divisors is an integer number (3583548).

Almost surely, 2^27871970 is an apocalyptic number.

27871970 is an abundant number, since it is smaller than the sum of its proper divisors (29464798).

27871970 is a wasteful number, since it uses less digits than its factorization.

27871970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398185.

The product of its (nonzero) digits is 49392, while the sum is 41.

The square root of 27871970 is about 5279.3910633709. The cubic root of 27871970 is about 303.1953631958.

The spelling of 27871970 in words is "twenty-seven million, eight hundred seventy-one thousand, nine hundred seventy".