27938151 has 18 divisors (see below), whose sum is σ = 42595800. Its totient is φ = 17643096.

The previous prime is 27938149. The next prime is 27938153. The reversal of 27938151 is 15183972.

27938151 is a `hidden beast` number, since 279 + 381 + 5 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (27938149) and next prime (27938153).

It is not a de Polignac number, because 27938151 - 2¹ = 27938149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27938153) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1051 + ... + 7548.

Almost surely, 2^27938151 is an apocalyptic number.

27938151 is a deficient number, since it is larger than the sum of its proper divisors (14657649).

27938151 is a wasteful number, since it uses less digits than its factorization.

27938151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8643 (or 8621 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 27938151 is about 5285.6552100946. The cubic root of 27938151 is about 303.4351490384.

The spelling of 27938151 in words is "twenty-seven million, nine hundred thirty-eight thousand, one hundred fifty-one".