15222372 has 24 divisors (see below), whose sum is σ = 38748192. Its totient is φ = 4612800.

The previous prime is 15222371. The next prime is 15222373. The reversal of 15222372 is 27322251.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (15222371) and next prime (15222373).

It is not an unprimeable number, because it can be changed into a prime (15222371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57529 + ... + 57792.

It is an arithmetic number, because the mean of its divisors is an integer number (1614508).

Almost surely, 2^15222372 is an apocalyptic number.

15222372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15222372 is an abundant number, since it is smaller than the sum of its proper divisors (23525820).

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

15222372 is a wasteful number, since it uses less digits than its factorization.

15222372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115339 (or 115337 counting only the distinct ones).

The product of its digits is 1680, while the sum is 24.

The square root of 15222372 is about 3901.5858314280. The cubic root of 15222372 is about 247.8339375623.

The spelling of 15222372 in words is "fifteen million, two hundred twenty-two thousand, three hundred seventy-two".