27158947 has 4 divisors (see below), whose sum is σ = 27280960. Its totient is φ = 27036936.

The previous prime is 27158941. The next prime is 27158951. The reversal of 27158947 is 74985172.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27158947 - 2¹⁵ = 27126179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27158941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60672 + ... + 61117.

It is an arithmetic number, because the mean of its divisors is an integer number (6820240).

Almost surely, 2^27158947 is an apocalyptic number.

27158947 is a deficient number, since it is larger than the sum of its proper divisors (122013).

27158947 is a wasteful number, since it uses less digits than its factorization.

27158947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122012.

The product of its digits is 141120, while the sum is 43.

The square root of 27158947 is about 5211.4246612611. The cubic root of 27158947 is about 300.5875411594.

The spelling of 27158947 in words is "twenty-seven million, one hundred fifty-eight thousand, nine hundred forty-seven".