12518398 has 4 divisors (see below), whose sum is σ = 18777600. Its totient is φ = 6259198.

The previous prime is 12518383. The next prime is 12518399. The reversal of 12518398 is 89381521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89381521 = 971 ⋅92051.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12518399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3129598 + ... + 3129601.

It is an arithmetic number, because the mean of its divisors is an integer number (4694400).

Almost surely, 2^12518398 is an apocalyptic number.

12518398 is a deficient number, since it is larger than the sum of its proper divisors (6259202).

12518398 is an equidigital number, since it uses as much as digits as its factorization.

12518398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6259201.

The product of its digits is 17280, while the sum is 37.

The square root of 12518398 is about 3538.1348193646. The cubic root of 12518398 is about 232.1932471329.

The spelling of 12518398 in words is "twelve million, five hundred eighteen thousand, three hundred ninety-eight".