27974121 has 32 divisors (see below), whose sum is σ = 44556288. Its totient is φ = 15275520.

The previous prime is 27974119. The next prime is 27974143. The reversal of 27974121 is 12147972.

It is not a de Polignac number, because 27974121 - 2¹ = 27974119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27974101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62926 + ... + 63368.

It is an arithmetic number, because the mean of its divisors is an integer number (1392384).

Almost surely, 2^27974121 is an apocalyptic number.

27974121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

27974121 is a deficient number, since it is larger than the sum of its proper divisors (16582167).

27974121 is a wasteful number, since it uses less digits than its factorization.

27974121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581.

The product of its digits is 7056, while the sum is 33.

The square root of 27974121 is about 5289.0567211933. The cubic root of 27974121 is about 303.5653161056.

The spelling of 27974121 in words is "twenty-seven million, nine hundred seventy-four thousand, one hundred twenty-one".