12654138 has 32 divisors (see below), whose sum is σ = 29859840. Its totient is φ = 3498480.

The previous prime is 12654127. The next prime is 12654149. The reversal of 12654138 is 83145621.

It is an interprime number because it is at equal distance from previous prime (12654127) and next prime (12654149).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3558 + ... + 6161.

It is an arithmetic number, because the mean of its divisors is an integer number (933120).

Almost surely, 2^12654138 is an apocalyptic number.

12654138 is an abundant number, since it is smaller than the sum of its proper divisors (17205702).

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

12654138 is a wasteful number, since it uses less digits than its factorization.

12654138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9762.

The product of its digits is 5760, while the sum is 30.

The square root of 12654138 is about 3557.2655228419. The cubic root of 12654138 is about 233.0294743117.

Adding to 12654138 its reverse (83145621), we get a palindrome (95799759).

The spelling of 12654138 in words is "twelve million, six hundred fifty-four thousand, one hundred thirty-eight".