15145998 has 24 divisors (see below), whose sum is σ = 35238312. Its totient is φ = 4327344.

The previous prime is 15145981. The next prime is 15146003. The reversal of 15145998 is 89954151.

15145998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25465 + ... + 26052.

It is an arithmetic number, because the mean of its divisors is an integer number (1468263).

Almost surely, 2^15145998 is an apocalyptic number.

15145998 is an abundant number, since it is smaller than the sum of its proper divisors (20092314).

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

15145998 is a wasteful number, since it uses less digits than its factorization.

15145998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51536 (or 51529 counting only the distinct ones).

The product of its digits is 64800, while the sum is 42.

The square root of 15145998 is about 3891.7859653378. The cubic root of 15145998 is about 247.4187632580.

The spelling of 15145998 in words is "fifteen million, one hundred forty-five thousand, nine hundred ninety-eight".