222498640 has 120 divisors (see below), whose sum is σ = 640459008. Its totient is φ = 70387200.

The previous prime is 222498631. The next prime is 222498707. The reversal of 222498640 is 46894222.

It is a self number, because there is not a number n which added to its sum of digits gives 222498640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93465 + ... + 95815.

Almost surely, 2^222498640 is an apocalyptic number.

222498640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222498640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320229504).

222498640 is an abundant number, since it is smaller than the sum of its proper divisors (417960368).

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

222498640 is a wasteful number, since it uses less digits than its factorization.

222498640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2397 (or 2378 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 222498640 is about 14916.3883028031. The cubic root of 222498640 is about 605.9579024371.

The spelling of 222498640 in words is "two hundred twenty-two million, four hundred ninety-eight thousand, six hundred forty".