222379520 has 160 divisors (see below), whose sum is σ = 596613600. Its totient is φ = 78807040.

The previous prime is 222379519. The next prime is 222379537. The reversal of 222379520 is 25973222.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1492406 + ... + 1492554.

It is an arithmetic number, because the mean of its divisors is an integer number (3728835).

Almost surely, 2^222379520 is an apocalyptic number.

222379520 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 222379520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298306800).

222379520 is an abundant number, since it is smaller than the sum of its proper divisors (374234080).

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

222379520 is a wasteful number, since it uses less digits than its factorization.

222379520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 222379520 is about 14912.3948445580. The cubic root of 222379520 is about 605.8497450860.

The spelling of 222379520 in words is "two hundred twenty-two million, three hundred seventy-nine thousand, five hundred twenty".