27899157 has 16 divisors (see below), whose sum is σ = 43702848. Its totient is φ = 15607680.

The previous prime is 27899093. The next prime is 27899171. The reversal of 27899157 is 75199872.

It is not a de Polignac number, because 27899157 - 2⁶ = 27899093 is a prime.

It is a super-2 number, since 2×27899157² = 1556725922621298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27899177) 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 15 ways as a sum of consecutive naturals, for example, 32088 + ... + 32945.

It is an arithmetic number, because the mean of its divisors is an integer number (2731428).

Almost surely, 2^27899157 is an apocalyptic number.

It is an amenable number.

27899157 is a deficient number, since it is larger than the sum of its proper divisors (15803691).

27899157 is a wasteful number, since it uses less digits than its factorization.

27899157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65060.

The product of its digits is 317520, while the sum is 48.

The square root of 27899157 is about 5281.9652592572. The cubic root of 27899157 is about 303.2939125468.

The spelling of 27899157 in words is "twenty-seven million, eight hundred ninety-nine thousand, one hundred fifty-seven".