27401887 has 2 divisors, whose sum is σ = 27401888. Its totient is φ = 27401886.

The previous prime is 27401873. The next prime is 27401903. The reversal of 27401887 is 78810472.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27401887 - 2¹¹ = 27399839 is a prime.

It is a super-2 number, since 2×27401887² = 1501726822321538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27401827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13700943 + 13700944.

It is an arithmetic number, because the mean of its divisors is an integer number (13700944).

Almost surely, 2^27401887 is an apocalyptic number.

27401887 is a deficient number, since it is larger than the sum of its proper divisors (1).

27401887 is an equidigital number, since it uses as much as digits as its factorization.

27401887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 27401887 is about 5234.6811746275. The cubic root of 27401887 is about 301.4811456939.

The spelling of 27401887 in words is "twenty-seven million, four hundred one thousand, eight hundred eighty-seven".