12523898 has 4 divisors (see below), whose sum is σ = 18785850. Its totient is φ = 6261948.

The previous prime is 12523877. The next prime is 12523909. The reversal of 12523898 is 89832521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11950849 + 573049 = 3457^2 + 757^2 .

It is a super-2 number, since 2×12523898² = 313696042228808, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3130973 + ... + 3130976.

Almost surely, 2^12523898 is an apocalyptic number.

12523898 is a deficient number, since it is larger than the sum of its proper divisors (6261952).

12523898 is an equidigital number, since it uses as much as digits as its factorization.

12523898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6261951.

The product of its digits is 34560, while the sum is 38.

The square root of 12523898 is about 3538.9119796909. The cubic root of 12523898 is about 232.2272471138.

The spelling of 12523898 in words is "twelve million, five hundred twenty-three thousand, eight hundred ninety-eight".