222557730 has 16 divisors (see below), whose sum is σ = 534138624. Its totient is φ = 59348720.

The previous prime is 222557689. The next prime is 222557747. The reversal of 222557730 is 37755222.

222557730 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 222557691 and 222557700.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3709266 + ... + 3709325.

It is an arithmetic number, because the mean of its divisors is an integer number (33383664).

Almost surely, 2^222557730 is an apocalyptic number.

222557730 is an abundant number, since it is smaller than the sum of its proper divisors (311580894).

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

222557730 is a wasteful number, since it uses less digits than its factorization.

222557730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7418601.

The product of its (nonzero) digits is 29400, while the sum is 33.

The square root of 222557730 is about 14918.3688786677. The cubic root of 222557730 is about 606.0115400432.

The spelling of 222557730 in words is "two hundred twenty-two million, five hundred fifty-seven thousand, seven hundred thirty".