27971130 has 32 divisors (see below), whose sum is σ = 73234368. Its totient is φ = 6780800.

The previous prime is 27971117. The next prime is 27971131. The reversal of 27971130 is 3117972.

It is a super-2 number, since 2×27971130² = 1564768226953800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (27971131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42051 + ... + 42710.

It is an arithmetic number, because the mean of its divisors is an integer number (2288574).

Almost surely, 2^27971130 is an apocalyptic number.

27971130 is an abundant number, since it is smaller than the sum of its proper divisors (45263238).

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

27971130 is a wasteful number, since it uses less digits than its factorization.

27971130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84782.

The product of its (nonzero) digits is 2646, while the sum is 30.

The square root of 27971130 is about 5288.7739600025. The cubic root of 27971130 is about 303.5544966269.

The spelling of 27971130 in words is "twenty-seven million, nine hundred seventy-one thousand, one hundred thirty".