270138987 has 12 divisors (see below), whose sum is σ = 391613040. Its totient is φ = 179440848.

The previous prime is 270138949. The next prime is 270139073. The reversal of 270138987 is 789831072.

It is not a de Polignac number, because 270138987 - 2⁶ = 270138923 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (270138907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51687 + ... + 56672.

It is an arithmetic number, because the mean of its divisors is an integer number (32634420).

Almost surely, 2^270138987 is an apocalyptic number.

270138987 is a deficient number, since it is larger than the sum of its proper divisors (121474053).

270138987 is a wasteful number, since it uses less digits than its factorization.

270138987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108642 (or 108639 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 270138987 is about 16435.9054207549. The cubic root of 270138987 is about 646.4412911017.

The spelling of 270138987 in words is "two hundred seventy million, one hundred thirty-eight thousand, nine hundred eighty-seven".