492512778 has 16 divisors (see below), whose sum is σ = 1094472960. Its totient is φ = 164170908.

The previous prime is 492512773. The next prime is 492512803. The reversal of 492512778 is 877215294.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (492512773) 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, 4560250 + ... + 4560357.

It is an arithmetic number, because the mean of its divisors is an integer number (68404560).

Almost surely, 2^492512778 is an apocalyptic number.

492512778 is an abundant number, since it is smaller than the sum of its proper divisors (601960182).

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

492512778 is a wasteful number, since it uses less digits than its factorization.

492512778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9120618 (or 9120612 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 492512778 is about 22192.6289114201. The cubic root of 492512778 is about 789.7188434952.

The spelling of 492512778 in words is "four hundred ninety-two million, five hundred twelve thousand, seven hundred seventy-eight".