222378156 has 384 divisors, whose sum is σ = 826398720. Its totient is φ = 50181120.

The previous prime is 222378113. The next prime is 222378161. The reversal of 222378156 is 651873222.

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 222378156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 13081060 + ... + 13081076.

It is an arithmetic number, because the mean of its divisors is an integer number (2152080).

Almost surely, 2^222378156 is an apocalyptic number.

222378156 is a gapful number since it is divisible by the number (26) 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 222378156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (413199360).

222378156 is an abundant number, since it is smaller than the sum of its proper divisors (604020564).

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

222378156 is a wasteful number, since it uses less digits than its factorization.

222378156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 53 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 222378156 is about 14912.3491107203. The cubic root of 222378156 is about 605.8485063917.

The spelling of 222378156 in words is "two hundred twenty-two million, three hundred seventy-eight thousand, one hundred fifty-six".