222693440 has 28 divisors (see below), whose sum is σ = 530289516. Its totient is φ = 89077248.

The previous prime is 222693413. The next prime is 222693469. The reversal of 222693440 is 44396222.

It can be written as a sum of positive squares in 2 ways, for example, as 174028864 + 48664576 = 13192^2 + 6976^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 222693397 and 222693406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347639 + ... + 348278.

Almost surely, 2^222693440 is an apocalyptic number.

222693440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222693440 is an abundant number, since it is smaller than the sum of its proper divisors (307596076).

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

222693440 is an equidigital number, since it uses as much as digits as its factorization.

222693440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695934 (or 695924 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 222693440 is about 14922.9166050072. The cubic root of 222693440 is about 606.1346917837.

The spelling of 222693440 in words is "two hundred twenty-two million, six hundred ninety-three thousand, four hundred forty".