222987492 has 144 divisors (see below), whose sum is σ = 719718272. Its totient is φ = 58786560.

The previous prime is 222987473. The next prime is 222987503. The reversal of 222987492 is 294789222.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 87192 + ... + 89712.

Almost surely, 2^222987492 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 222987492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359859136).

222987492 is an abundant number, since it is smaller than the sum of its proper divisors (496730780).

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

222987492 is a wasteful number, since it uses less digits than its factorization.

222987492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2560 (or 2546 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 222987492 is about 14932.7657183792. The cubic root of 222987492 is about 606.4013614061.

The spelling of 222987492 in words is "two hundred twenty-two million, nine hundred eighty-seven thousand, four hundred ninety-two".