15222066 has 16 divisors (see below), whose sum is σ = 30534624. Its totient is φ = 5058944.

The previous prime is 15222049. The next prime is 15222079. The reversal of 15222066 is 66022251.

It is a super-2 number, since 2×15222066² = 463422586616712, which contains 22 as substring.

It is a Curzon 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, 1476 + ... + 5711.

It is an arithmetic number, because the mean of its divisors is an integer number (1908414).

Almost surely, 2^15222066 is an apocalyptic number.

15222066 is an abundant number, since it is smaller than the sum of its proper divisors (15312558).

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

15222066 is a wasteful number, since it uses less digits than its factorization.

15222066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7545.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 15222066 is about 3901.5466164074. The cubic root of 15222066 is about 247.8322768992.

The spelling of 15222066 in words is "fifteen million, two hundred twenty-two thousand, sixty-six".