15305130 has 24 divisors (see below), whose sum is σ = 39793572. Its totient is φ = 4081344.

The previous prime is 15305113. The next prime is 15305141. The reversal of 15305130 is 3150351.

It is a happy number.

15305130 is a `hidden beast` number, since 1 + 530 + 5 + 130 = 666.

15305130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12552849 + 2752281 = 3543^2 + 1659^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 84939 + ... + 85118.

Almost surely, 2^15305130 is an apocalyptic number.

15305130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15305130 is an abundant number, since it is smaller than the sum of its proper divisors (24488442).

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

15305130 is a wasteful number, since it uses less digits than its factorization.

15305130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170070 (or 170067 counting only the distinct ones).

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

The square root of 15305130 is about 3912.1771432286. The cubic root of 15305130 is about 248.2822510529.

Adding to 15305130 its reverse (3150351), we get a palindrome (18455481).

The spelling of 15305130 in words is "fifteen million, three hundred five thousand, one hundred thirty".