15020730 has 96 divisors (see below), whose sum is σ = 41243904. Its totient is φ = 3788928.

The previous prime is 15020729. The next prime is 15020737. The reversal of 15020730 is 3702051.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15020737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 224157 + ... + 224223.

It is an arithmetic number, because the mean of its divisors is an integer number (429624).

Almost surely, 2^15020730 is an apocalyptic number.

15020730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 15020730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20621952).

15020730 is an abundant number, since it is smaller than the sum of its proper divisors (26223174).

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

15020730 is a wasteful number, since it uses less digits than its factorization.

15020730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 15020730 is about 3875.6586537000. The cubic root of 15020730 is about 246.7347653063.

Adding to 15020730 its reverse (3702051), we get a palindrome (18722781).

The spelling of 15020730 in words is "fifteen million, twenty thousand, seven hundred thirty".