222537890 has 8 divisors (see below), whose sum is σ = 400568220. Its totient is φ = 89015152.

The previous prime is 222537881. The next prime is 222537929. The reversal of 222537890 is 98735222.

222537890 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 215414329 + 7123561 = 14677^2 + 2669^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×222537890² = 99046224971304200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11126885 + ... + 11126904.

Almost surely, 2^222537890 is an apocalyptic number.

222537890 is a deficient number, since it is larger than the sum of its proper divisors (178030330).

222537890 is a wasteful number, since it uses less digits than its factorization.

222537890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22253796.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 222537890 is about 14917.7039117955. The cubic root of 222537890 is about 605.9935317924.

The spelling of 222537890 in words is "two hundred twenty-two million, five hundred thirty-seven thousand, eight hundred ninety".