12992538 has 16 divisors (see below), whose sum is σ = 27984096. Its totient is φ = 3997680.

The previous prime is 12992533. The next prime is 12992543. The reversal of 12992538 is 83529921.

It is an interprime number because it is at equal distance from previous prime (12992533) and next prime (12992543).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 12992496 and 12992505.

It is not an unprimeable number, because it can be changed into a prime (12992533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83208 + ... + 83363.

It is an arithmetic number, because the mean of its divisors is an integer number (1749006).

Almost surely, 2^12992538 is an apocalyptic number.

12992538 is an abundant number, since it is smaller than the sum of its proper divisors (14991558).

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

12992538 is a wasteful number, since it uses less digits than its factorization.

12992538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166589.

The product of its digits is 38880, while the sum is 39.

The square root of 12992538 is about 3604.5163337125. The cubic root of 12992538 is about 235.0884712911.

It can be divided in two parts, 12992 and 538, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 12992538 in words is "twelve million, nine hundred ninety-two thousand, five hundred thirty-eight".