12588138 has 24 divisors (see below), whose sum is σ = 27341028. Its totient is φ = 4185792.

The previous prime is 12588137. The next prime is 12588157. The reversal of 12588138 is 83188521.

It can be written as a sum of positive squares in 2 ways, for example, as 7935489 + 4652649 = 2817^2 + 2157^2 .

It is a super-2 number, since 2×12588138² = 316922436614088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12588131) 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, 11670 + ... + 12702.

Almost surely, 2^12588138 is an apocalyptic number.

12588138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12588138 is an abundant number, since it is smaller than the sum of its proper divisors (14752890).

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

12588138 is a wasteful number, since it uses less digits than its factorization.

12588138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718 (or 1715 counting only the distinct ones).

The product of its digits is 15360, while the sum is 36.

The square root of 12588138 is about 3547.9766064618. The cubic root of 12588138 is about 232.6236317845.

The spelling of 12588138 in words is "twelve million, five hundred eighty-eight thousand, one hundred thirty-eight".