222190776 has 80 divisors (see below), whose sum is σ = 628570800. Its totient is φ = 73322496.

The previous prime is 222190763. The next prime is 222190777. The reversal of 222190776 is 677091222.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 222190776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222190777) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 65080 + ... + 68408.

It is an arithmetic number, because the mean of its divisors is an integer number (7857135).

Almost surely, 2^222190776 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 222190776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314285400).

222190776 is an abundant number, since it is smaller than the sum of its proper divisors (406380024).

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

222190776 is a wasteful number, since it uses less digits than its factorization.

222190776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3450 (or 3437 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 222190776 is about 14906.0650743246. The cubic root of 222190776 is about 605.6782921406.

The spelling of 222190776 in words is "two hundred twenty-two million, one hundred ninety thousand, seven hundred seventy-six".