27622397 has 16 divisors (see below), whose sum is σ = 31328640. Its totient is φ = 24134400.

The previous prime is 27622367. The next prime is 27622403. The reversal of 27622397 is 79322672.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 27622397 - 2⁸ = 27622141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27622397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27622327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32504 + ... + 33342.

It is an arithmetic number, because the mean of its divisors is an integer number (1958040).

Almost surely, 2^27622397 is an apocalyptic number.

It is an amenable number.

27622397 is a deficient number, since it is larger than the sum of its proper divisors (3706243).

27622397 is a wasteful number, since it uses less digits than its factorization.

27622397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964.

The product of its digits is 63504, while the sum is 38.

The square root of 27622397 is about 5255.7013804059. The cubic root of 27622397 is about 302.2876847264.

The spelling of 27622397 in words is "twenty-seven million, six hundred twenty-two thousand, three hundred ninety-seven".