27972201 has 8 divisors (see below), whose sum is σ = 37345504. Its totient is φ = 18623520.

The previous prime is 27972179. The next prime is 27972229. The reversal of 27972201 is 10227972.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27972201 - 2⁵ = 27972169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27972401) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3316 + ... + 8181.

It is an arithmetic number, because the mean of its divisors is an integer number (4668188).

Almost surely, 2^27972201 is an apocalyptic number.

It is an amenable number.

27972201 is a deficient number, since it is larger than the sum of its proper divisors (9373303).

27972201 is a wasteful number, since it uses less digits than its factorization.

27972201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12311.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 27972201 is about 5288.8752112335. The cubic root of 27972201 is about 303.5583708920.

The spelling of 27972201 in words is "twenty-seven million, nine hundred seventy-two thousand, two hundred one".