15222180 has 24 divisors (see below), whose sum is σ = 42622272. Its totient is φ = 4059232.

The previous prime is 15222143. The next prime is 15222197. The reversal of 15222180 is 8122251.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126792 + ... + 126911.

It is an arithmetic number, because the mean of its divisors is an integer number (1775928).

Almost surely, 2^15222180 is an apocalyptic number.

15222180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15222180 is an abundant number, since it is smaller than the sum of its proper divisors (27400092).

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

15222180 is a wasteful number, since it uses less digits than its factorization.

15222180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253715 (or 253713 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 15222180 is about 3901.5612259710. The cubic root of 15222180 is about 247.8328955802.

The spelling of 15222180 in words is "fifteen million, two hundred twenty-two thousand, one hundred eighty".