27217442 has 54 divisors (see below), whose sum is σ = 52129521. Its totient is φ = 10624320.

The previous prime is 27217427. The next prime is 27217447. The reversal of 27217442 is 24471272.

It can be written as a sum of positive squares in 2 ways, for example, as 24910081 + 2307361 = 4991^2 + 1519^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3689.

It is a Duffinian number.

Its product of digits (6272) is a multiple of the sum of its prime factors (112).

It is not an unprimeable number, because it can be changed into a prime (27217447) 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 26 ways as a sum of consecutive naturals, for example, 877967 + ... + 877997.

Almost surely, 2^27217442 is an apocalyptic number.

27217442 is a deficient number, since it is larger than the sum of its proper divisors (24912079).

27217442 is a wasteful number, since it uses less digits than its factorization.

27217442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112 (or 57 counting only the distinct ones).

The product of its digits is 6272, while the sum is 29.

The square root of 27217442 is about 5217.0338315943. The cubic root of 27217442 is about 300.8031884494.

Multiplying 27217442 by its product of digits (6272), we get a square (170707796224 = 413168²).

The spelling of 27217442 in words is "twenty-seven million, two hundred seventeen thousand, four hundred forty-two".