222401700 has 90 divisors (see below), whose sum is σ = 720964706. Its totient is φ = 59304960.

The previous prime is 222401693. The next prime is 222401717. The reversal of 222401700 is 7104222.

It can be written as a sum of positive squares in 3 ways, for example, as 272484 + 222129216 = 522^2 + 14904^2 .

It is a tau number, because it is divible by the number of its divisors (90).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 5629 + ... + 21828.

Almost surely, 2^222401700 is an apocalyptic number.

222401700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222401700 is an abundant number, since it is smaller than the sum of its proper divisors (498563006).

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

222401700 is a wasteful number, since it uses less digits than its factorization.

222401700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27483 (or 27467 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 222401700 is about 14913.1385026761. The cubic root of 222401700 is about 605.8698867799.

Adding to 222401700 its reverse (7104222), we get a palindrome (229505922).

The spelling of 222401700 in words is "two hundred twenty-two million, four hundred one thousand, seven hundred".