222736398 has 8 divisors (see below), whose sum is σ = 445472808. Its totient is φ = 74245464.

The previous prime is 222736391. The next prime is 222736399. The reversal of 222736398 is 893637222.

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

222736398 is an admirable number.

It is a super-2 number, since 2×222736398² = 99223005988028808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222736391) 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, 18561361 + ... + 18561372.

It is an arithmetic number, because the mean of its divisors is an integer number (55684101).

Almost surely, 2^222736398 is an apocalyptic number.

222736398 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.

222736398 is a wasteful number, since it uses less digits than its factorization.

222736398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37122738.

The product of its digits is 217728, while the sum is 42.

The square root of 222736398 is about 14924.3558654972. The cubic root of 222736398 is about 606.1736641336.

The spelling of 222736398 in words is "two hundred twenty-two million, seven hundred thirty-six thousand, three hundred ninety-eight".