15222672 has 60 divisors (see below), whose sum is σ = 43325724. Its totient is φ = 4988160.

The previous prime is 15222659. The next prime is 15222673. The reversal of 15222672 is 27622251.

It can be written as a sum of positive squares in 2 ways, for example, as 2944656 + 12278016 = 1716^2 + 3504^2 .

It is not an unprimeable number, because it can be changed into a prime (15222673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7918 + ... + 9650.

Almost surely, 2^15222672 is an apocalyptic number.

15222672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15222672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21662862).

15222672 is an abundant number, since it is smaller than the sum of its proper divisors (28103052).

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

15222672 is a wasteful number, since it uses less digits than its factorization.

15222672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808 (or 1799 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 15222672 is about 3901.6242771441. The cubic root of 15222672 is about 247.8355656417.

The spelling of 15222672 in words is "fifteen million, two hundred twenty-two thousand, six hundred seventy-two".