222990528 has 56 divisors (see below), whose sum is σ = 591872832. Its totient is φ = 74093824.

The previous prime is 222990413. The next prime is 222990583. The reversal of 222990528 is 825099222.

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, 64951 + ... + 68297.

Almost surely, 2^222990528 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 222990528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295936416).

222990528 is an abundant number, since it is smaller than the sum of its proper divisors (368882304).

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

222990528 is a wasteful number, since it uses less digits than its factorization.

222990528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3709 (or 3699 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 222990528 is about 14932.8673736828. The cubic root of 222990528 is about 606.4041134680.

The spelling of 222990528 in words is "two hundred twenty-two million, nine hundred ninety thousand, five hundred twenty-eight".