27972622 has 4 divisors (see below), whose sum is σ = 41958936. Its totient is φ = 13986310.

The previous prime is 27972583. The next prime is 27972643. The reversal of 27972622 is 22627972.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6993154 + ... + 6993157.

It is an arithmetic number, because the mean of its divisors is an integer number (10489734).

Almost surely, 2^27972622 is an apocalyptic number.

27972622 is a deficient number, since it is larger than the sum of its proper divisors (13986314).

27972622 is a wasteful number, since it uses less digits than its factorization.

27972622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13986313.

The product of its digits is 42336, while the sum is 37.

The square root of 27972622 is about 5288.9150116068. The cubic root of 27972622 is about 303.5598938020.

The spelling of 27972622 in words is "twenty-seven million, nine hundred seventy-two thousand, six hundred twenty-two".