222660424 has 64 divisors (see below), whose sum is σ = 527212800. Its totient is φ = 85899264.

The previous prime is 222660421. The next prime is 222660437. The reversal of 222660424 is 424066222.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 222660392 and 222660401.

It is not an unprimeable number, because it can be changed into a prime (222660421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16812 + ... + 26980.

It is an arithmetic number, because the mean of its divisors is an integer number (8237700).

Almost surely, 2^222660424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222660424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263606400).

222660424 is an abundant number, since it is smaller than the sum of its proper divisors (304552376).

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

222660424 is a wasteful number, since it uses less digits than its factorization.

222660424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10222 (or 10218 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 222660424 is about 14921.8103459332. The cubic root of 222660424 is about 606.1047356071.

The spelling of 222660424 in words is "two hundred twenty-two million, six hundred sixty thousand, four hundred twenty-four".