222390000 has 300 divisors, whose sum is σ = 891352176. Its totient is φ = 50688000.

The previous prime is 222389969. The next prime is 222390031. The reversal of 222390000 is 93222.

It is an interprime number because it is at equal distance from previous prime (222389969) and next prime (222390031).

It is a tau number, because it is divible by the number of its divisors (300).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 59 ways as a sum of consecutive naturals, for example, 629824 + ... + 630176.

Almost surely, 2^222390000 is an apocalyptic number.

222390000 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 222390000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (445676088).

222390000 is an abundant number, since it is smaller than the sum of its proper divisors (668962176).

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

222390000 is a wasteful number, since it uses less digits than its factorization.

222390000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 222390000 is about 14912.7462259639. The cubic root of 222390000 is about 605.8592621579.

The spelling of 222390000 in words is "two hundred twenty-two million, three hundred ninety thousand".