222446916 has 18 divisors (see below), whose sum is σ = 562296462. Its totient is φ = 74148960.

The previous prime is 222446897. The next prime is 222446929. The reversal of 222446916 is 619644222.

It can be written as a sum of positive squares in only one way, i.e., 156350016 + 66096900 = 12504^2 + 8130^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×222446916² = 98965260875822112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 6179081 = 222446916 / (2 + 2 + 2 + 4 + 4 + 6 + 9 + 1 + 6).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3089505 + ... + 3089576.

Almost surely, 2^222446916 is an apocalyptic number.

It is an amenable number.

222446916 is an abundant number, since it is smaller than the sum of its proper divisors (339849546).

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

222446916 is a wasteful number, since it uses less digits than its factorization.

222446916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6179091 (or 6179086 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 222446916 is about 14914.6544043099. The cubic root of 222446916 is about 605.9109433552.

The spelling of 222446916 in words is "two hundred twenty-two million, four hundred forty-six thousand, nine hundred sixteen".