222738 has 8 divisors (see below), whose sum is σ = 445488. Its totient is φ = 74244.

The previous prime is 222731. The next prime is 222773. The reversal of 222738 is 837222.

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

222738 is an admirable number.

It is a super-2 number, since 2×222738² = 99224433288, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (222731) 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, 18556 + ... + 18567.

It is an arithmetic number, because the mean of its divisors is an integer number (55686).

2²²²⁷³⁸ is an apocalyptic number.

222738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

222738 is a wasteful number, since it uses less digits than its factorization.

222738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37128.

The product of its digits is 1344, while the sum is 24.

The square root of 222738 is about 471.9512686708. The cubic root of 222738 is about 60.6175117403.

The spelling of 222738 in words is "two hundred twenty-two thousand, seven hundred thirty-eight".