222887940 has 96 divisors (see below), whose sum is σ = 710470656. Its totient is φ = 51680640.

The previous prime is 222887933. The next prime is 222887947. The reversal of 222887940 is 49788222.

It is an interprime number because it is at equal distance from previous prime (222887933) and next prime (222887947).

It is a junction number, because it is equal to n+sod(n) for n = 222887892 and 222887901.

It is not an unprimeable number, because it can be changed into a prime (222887947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7839 + ... + 22521.

It is an arithmetic number, because the mean of its divisors is an integer number (7400736).

Almost surely, 2^222887940 is an apocalyptic number.

222887940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222887940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355235328).

222887940 is an abundant number, since it is smaller than the sum of its proper divisors (487582716).

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

222887940 is a wasteful number, since it uses less digits than its factorization.

222887940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14729 (or 14727 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 222887940 is about 14929.4320052707. The cubic root of 222887940 is about 606.3111060382.

The spelling of 222887940 in words is "two hundred twenty-two million, eight hundred eighty-seven thousand, nine hundred forty".