222052640 has 48 divisors (see below), whose sum is σ = 555464952. Its totient is φ = 83595264.

The previous prime is 222052631. The next prime is 222052643. The reversal of 222052640 is 46250222.

It can be written as a sum of positive squares in 4 ways, for example, as 212343184 + 9709456 = 14572^2 + 3116^2 .

It is not an unprimeable number, because it can be changed into a prime (222052643) 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, 38099 + ... + 43538.

Almost surely, 2^222052640 is an apocalyptic number.

222052640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222052640 is an abundant number, since it is smaller than the sum of its proper divisors (333412312).

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

222052640 is a wasteful number, since it uses less digits than its factorization.

222052640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81669 (or 81661 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 222052640 is about 14901.4308037853. The cubic root of 222052640 is about 605.5527493939.

The spelling of 222052640 in words is "two hundred twenty-two million, fifty-two thousand, six hundred forty".