15072220 has 12 divisors (see below), whose sum is σ = 31651704. Its totient is φ = 6028880.

The previous prime is 15072203. The next prime is 15072223. The reversal of 15072220 is 2227051.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15072223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376786 + ... + 376825.

It is an arithmetic number, because the mean of its divisors is an integer number (2637642).

Almost surely, 2^15072220 is an apocalyptic number.

15072220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15072220 is an abundant number, since it is smaller than the sum of its proper divisors (16579484).

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

15072220 is a wasteful number, since it uses less digits than its factorization.

15072220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753620 (or 753618 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 15072220 is about 3882.2957125907. The cubic root of 15072220 is about 247.0163735478.

Adding to 15072220 its reverse (2227051), we get a palindrome (17299271).

The spelling of 15072220 in words is "fifteen million, seventy-two thousand, two hundred twenty".