27157908 has 72 divisors (see below), whose sum is σ = 69318144. Its totient is φ = 8268800.

The previous prime is 27157903. The next prime is 27157913. The reversal of 27157908 is 80975172.

It is an interprime number because it is at equal distance from previous prime (27157903) and next prime (27157913).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27157901) 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 23 ways as a sum of consecutive naturals, for example, 142093 + ... + 142283.

It is an arithmetic number, because the mean of its divisors is an integer number (962752).

Almost surely, 2^27157908 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27157908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34659072).

27157908 is an abundant number, since it is smaller than the sum of its proper divisors (42160236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27157908 is a wasteful number, since it uses less digits than its factorization.

27157908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 27157908 is about 5211.3249754741. The cubic root of 27157908 is about 300.5837079911.

The spelling of 27157908 in words is "twenty-seven million, one hundred fifty-seven thousand, nine hundred eight".