15013530 has 48 divisors (see below), whose sum is σ = 44613504. Its totient is φ = 3431520.

The previous prime is 15013513. The next prime is 15013543. The reversal of 15013530 is 3531051.

It is a happy number.

15013530 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 (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11286 + ... + 12545.

It is an arithmetic number, because the mean of its divisors is an integer number (929448).

Almost surely, 2^15013530 is an apocalyptic number.

15013530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15013530 is an abundant number, since it is smaller than the sum of its proper divisors (29599974).

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

15013530 is a wasteful number, since it uses less digits than its factorization.

15013530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23851 (or 23848 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 15013530 is about 3874.7296679898. The cubic root of 15013530 is about 246.6953359259.

Adding to 15013530 its reverse (3531051), we get a palindrome (18544581).

The spelling of 15013530 in words is "fifteen million, thirteen thousand, five hundred thirty".