22142208 has 72 divisors (see below), whose sum is σ = 64312416. Its totient is φ = 6707200.

The previous prime is 22142189. The next prime is 22142213. The reversal of 22142208 is 80224122.

It is a happy number.

It is a congruent 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, 7138 + ... + 9758.

It is an arithmetic number, because the mean of its divisors is an integer number (893228).

Almost surely, 2^22142208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22142208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32156208).

22142208 is an abundant number, since it is smaller than the sum of its proper divisors (42170208).

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

22142208 is a wasteful number, since it uses less digits than its factorization.

22142208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2651 (or 2637 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 22142208 is about 4705.5507647883. The cubic root of 22142208 is about 280.8063829200.

The spelling of 22142208 in words is "twenty-two million, one hundred forty-two thousand, two hundred eight".