15013998 has 24 divisors (see below), whose sum is σ = 33736248. Its totient is φ = 5004504.

The previous prime is 15013993. The next prime is 15014011. The reversal of 15013998 is 89931051.

It is a happy number.

15013998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15013993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14961 + ... + 15932.

It is an arithmetic number, because the mean of its divisors is an integer number (1405677).

Almost surely, 2^15013998 is an apocalyptic number.

15013998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

15013998 is an abundant number, since it is smaller than the sum of its proper divisors (18722250).

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

15013998 is an equidigital number, since it uses as much as digits as its factorization.

15013998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30910 (or 30898 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 15013998 is about 3874.7900588290. The cubic root of 15013998 is about 246.6978992187.

The spelling of 15013998 in words is "fifteen million, thirteen thousand, nine hundred ninety-eight".