222740838 has 24 divisors (see below), whose sum is σ = 508006200. Its totient is φ = 70339104.

The previous prime is 222740831. The next prime is 222740863. The reversal of 222740838 is 838047222.

222740838 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×222740838² = 99226961825884488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222740831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 325303 + ... + 325986.

It is an arithmetic number, because the mean of its divisors is an integer number (21166925).

Almost surely, 2^222740838 is an apocalyptic number.

222740838 is an abundant number, since it is smaller than the sum of its proper divisors (285265362).

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

222740838 is a wasteful number, since it uses less digits than its factorization.

222740838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651316 (or 651313 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 222740838 is about 14924.5046148943. The cubic root of 222740838 is about 606.1776919039.

The spelling of 222740838 in words is "two hundred twenty-two million, seven hundred forty thousand, eight hundred thirty-eight".