27972058 has 4 divisors (see below), whose sum is σ = 41958090. Its totient is φ = 13986028.

The previous prime is 27972053. The next prime is 27972107. The reversal of 27972058 is 85027972.

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

It can be written as a sum of positive squares in only one way, i.e., 26904969 + 1067089 = 5187^2 + 1033^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 27972058.

It is not an unprimeable number, because it can be changed into a prime (27972053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6993013 + ... + 6993016.

Almost surely, 2^27972058 is an apocalyptic number.

27972058 is a deficient number, since it is larger than the sum of its proper divisors (13986032).

27972058 is a wasteful number, since it uses less digits than its factorization.

27972058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13986031.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 27972058 is about 5288.8616922737. The cubic root of 27972058 is about 303.5578536055.

The spelling of 27972058 in words is "twenty-seven million, nine hundred seventy-two thousand, fifty-eight".