222401680 has 40 divisors (see below), whose sum is σ = 525859200. Its totient is φ = 87451008.

The previous prime is 222401677. The next prime is 222401687. The reversal of 222401680 is 86104222.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (222401687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18840 + ... + 28279.

It is an arithmetic number, because the mean of its divisors is an integer number (13146480).

Almost surely, 2^222401680 is an apocalyptic number.

222401680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222401680 is an abundant number, since it is smaller than the sum of its proper divisors (303457520).

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

222401680 is a wasteful number, since it uses less digits than its factorization.

222401680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47191 (or 47185 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 222401680 is about 14913.1378321264. The cubic root of 222401680 is about 605.8698686184.

The spelling of 222401680 in words is "two hundred twenty-two million, four hundred one thousand, six hundred eighty".