222157230 has 64 divisors (see below), whose sum is σ = 558448128. Its totient is φ = 56453760.

The previous prime is 222157217. The next prime is 222157237. The reversal of 222157230 is 32751222.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 222157230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222157237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 273525 + ... + 274335.

It is an arithmetic number, because the mean of its divisors is an integer number (8725752).

Almost surely, 2^222157230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222157230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279224064).

222157230 is an abundant number, since it is smaller than the sum of its proper divisors (336290898).

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

222157230 is a wasteful number, since it uses less digits than its factorization.

222157230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 222157230 is about 14904.9397851853. The cubic root of 222157230 is about 605.6478091671.

The spelling of 222157230 in words is "two hundred twenty-two million, one hundred fifty-seven thousand, two hundred thirty".