12523494 has 16 divisors (see below), whose sum is σ = 25282368. Its totient is φ = 4135272.

The previous prime is 12523493. The next prime is 12523499. The reversal of 12523494 is 49432521.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12523493) 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, 9112 + ... + 10395.

It is an arithmetic number, because the mean of its divisors is an integer number (1580148).

Almost surely, 2^12523494 is an apocalyptic number.

12523494 is an abundant number, since it is smaller than the sum of its proper divisors (12758874).

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

12523494 is a wasteful number, since it uses less digits than its factorization.

12523494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19619.

The product of its digits is 8640, while the sum is 30.

The square root of 12523494 is about 3538.8548995402. The cubic root of 12523494 is about 232.2247499994.

The spelling of 12523494 in words is "twelve million, five hundred twenty-three thousand, four hundred ninety-four".