222742824 has 16 divisors (see below), whose sum is σ = 556857120. Its totient is φ = 74247600.

The previous prime is 222742813. The next prime is 222742829. The reversal of 222742824 is 428247222.

It is a super-2 number, since 2×222742824² = 99228731286989952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (222742829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4640452 + ... + 4640499.

It is an arithmetic number, because the mean of its divisors is an integer number (34803570).

Almost surely, 2^222742824 is an apocalyptic number.

222742824 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

222742824 is an abundant number, since it is smaller than the sum of its proper divisors (334114296).

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

222742824 is a wasteful number, since it uses less digits than its factorization.

222742824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9280960 (or 9280956 counting only the distinct ones).

The product of its digits is 28672, while the sum is 33.

The square root of 222742824 is about 14924.5711496177. The cubic root of 222742824 is about 606.1794934974.

The spelling of 222742824 in words is "two hundred twenty-two million, seven hundred forty-two thousand, eight hundred twenty-four".