27972066 has 32 divisors (see below), whose sum is σ = 60926400. Its totient is φ = 8527680.

The previous prime is 27972053. The next prime is 27972107. The reversal of 27972066 is 66027972.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 925 + ... + 7536.

It is an arithmetic number, because the mean of its divisors is an integer number (1903950).

Almost surely, 2^27972066 is an apocalyptic number.

27972066 is an abundant number, since it is smaller than the sum of its proper divisors (32954334).

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

27972066 is a wasteful number, since it uses less digits than its factorization.

27972066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8514.

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 27972066 is about 5288.8624485800. The cubic root of 27972066 is about 303.5578825447.

The spelling of 27972066 in words is "twenty-seven million, nine hundred seventy-two thousand, sixty-six".