222139800 has 192 divisors, whose sum is σ = 790425600. Its totient is φ = 57283200.

The previous prime is 222139793. The next prime is 222139829. The reversal of 222139800 is 8931222.

It is a happy number.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 166737 + ... + 168063.

It is an arithmetic number, because the mean of its divisors is an integer number (4116800).

Almost surely, 2^222139800 is an apocalyptic number.

222139800 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 222139800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (395212800).

222139800 is an abundant number, since it is smaller than the sum of its proper divisors (568285800).

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

222139800 is a wasteful number, since it uses less digits than its factorization.

222139800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383 (or 1368 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 222139800 is about 14904.3550682343. The cubic root of 222139800 is about 605.6319694585.

The spelling of 222139800 in words is "two hundred twenty-two million, one hundred thirty-nine thousand, eight hundred".