15945222 has 32 divisors (see below), whose sum is σ = 33500160. Its totient is φ = 5052960.

The previous prime is 15945221. The next prime is 15945229. The reversal of 15945222 is 22254951.

15945222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 15945222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15945221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10248 + ... + 11700.

It is an arithmetic number, because the mean of its divisors is an integer number (1046880).

Almost surely, 2^15945222 is an apocalyptic number.

15945222 is an abundant number, since it is smaller than the sum of its proper divisors (17554938).

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

15945222 is a wasteful number, since it uses less digits than its factorization.

15945222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548.

The product of its digits is 7200, while the sum is 30.

The square root of 15945222 is about 3993.1468793422. The cubic root of 15945222 is about 251.6963146998.

The spelling of 15945222 in words is "fifteen million, nine hundred forty-five thousand, two hundred twenty-two".