222816492 has 36 divisors (see below), whose sum is σ = 568407840. Its totient is φ = 73589472.

The previous prime is 222816487. The next prime is 222816511. The reversal of 222816492 is 294618222.

222816492 is a `hidden beast` number, since 2 + 2 + 2 + 8 + 1 + 649 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24468 + ... + 32315.

Almost surely, 2^222816492 is an apocalyptic number.

It is an amenable number.

222816492 is an abundant number, since it is smaller than the sum of its proper divisors (345591348).

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

222816492 is a wasteful number, since it uses less digits than its factorization.

222816492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56902 (or 56897 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 222816492 is about 14927.0389562029. The cubic root of 222816492 is about 606.2463136206.

The spelling of 222816492 in words is "two hundred twenty-two million, eight hundred sixteen thousand, four hundred ninety-two".