222394840 has 32 divisors (see below), whose sum is σ = 504053280. Its totient is φ = 88306432.

The previous prime is 222394831. The next prime is 222394871. The reversal of 222394840 is 48493222.

222394840 is digitally balanced in base 2, because in such base 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 = 222394796 and 222394805.

It is a congruent number.

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, 14812 + ... + 25771.

It is an arithmetic number, because the mean of its divisors is an integer number (15751665).

Almost surely, 2^222394840 is an apocalyptic number.

222394840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222394840 is an abundant number, since it is smaller than the sum of its proper divisors (281658440).

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

222394840 is a wasteful number, since it uses less digits than its factorization.

222394840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40731 (or 40727 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 222394840 is about 14912.9085023680. The cubic root of 222394840 is about 605.8636573458.

The spelling of 222394840 in words is "two hundred twenty-two million, three hundred ninety-four thousand, eight hundred forty".