222944540 has 48 divisors (see below), whose sum is σ = 576230592. Its totient is φ = 70557696.

The previous prime is 222944531. The next prime is 222944549. The reversal of 222944540 is 45449222.

It is an interprime number because it is at equal distance from previous prime (222944531) and next prime (222944549).

It is a junction number, because it is equal to n+sod(n) for n = 222944497 and 222944506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222944549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59429 + ... + 63068.

It is an arithmetic number, because the mean of its divisors is an integer number (12004804).

Almost surely, 2^222944540 is an apocalyptic number.

222944540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222944540 is an abundant number, since it is smaller than the sum of its proper divisors (353286052).

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

222944540 is a wasteful number, since it uses less digits than its factorization.

222944540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122526 (or 122524 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 222944540 is about 14931.3274694516. The cubic root of 222944540 is about 606.3624237605.

The spelling of 222944540 in words is "two hundred twenty-two million, nine hundred forty-four thousand, five hundred forty".