222777072 has 120 divisors (see below), whose sum is σ = 737199840. Its totient is φ = 61447680.

The previous prime is 222777059. The next prime is 222777083. The reversal of 222777072 is 270777222.

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

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, 25422 + ... + 33042.

It is an arithmetic number, because the mean of its divisors is an integer number (6143332).

Almost surely, 2^222777072 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 222777072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368599920).

222777072 is an abundant number, since it is smaller than the sum of its proper divisors (514422768).

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

222777072 is a wasteful number, since it uses less digits than its factorization.

222777072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7671 (or 7662 counting only the distinct ones).

The product of its (nonzero) digits is 38416, while the sum is 36.

The square root of 222777072 is about 14925.7184751690. The cubic root of 222777072 is about 606.2105597753.

The spelling of 222777072 in words is "two hundred twenty-two million, seven hundred seventy-seven thousand, seventy-two".