222147400 has 48 divisors (see below), whose sum is σ = 517824000. Its totient is φ = 88630080.

The previous prime is 222147353. The next prime is 222147403. The reversal of 222147400 is 4741222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (222147403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91401 + ... + 93799.

It is an arithmetic number, because the mean of its divisors is an integer number (10788000).

Almost surely, 2^222147400 is an apocalyptic number.

222147400 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 222147400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258912000).

222147400 is an abundant number, since it is smaller than the sum of its proper divisors (295676600).

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

222147400 is a wasteful number, since it uses less digits than its factorization.

222147400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2878 (or 2869 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 222147400 is about 14904.6100250896. The cubic root of 222147400 is about 605.6388761459.

Adding to 222147400 its reverse (4741222), we get a palindrome (226888622).

The spelling of 222147400 in words is "two hundred twenty-two million, one hundred forty-seven thousand, four hundred".