492143688 has 80 divisors (see below), whose sum is σ = 1426045500. Its totient is φ = 158385024.

The previous prime is 492143683. The next prime is 492143699. The reversal of 492143688 is 886341294.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 475152804 + 16990884 = 21798^2 + 4122^2 .

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (492143683) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5698 + ... + 31886.

Almost surely, 2^492143688 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 492143688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (713022750).

492143688 is an abundant number, since it is smaller than the sum of its proper divisors (933901812).

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

492143688 is a wasteful number, since it uses less digits than its factorization.

492143688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26236 (or 26223 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 492143688 is about 22184.3117540301. The cubic root of 492143688 is about 789.5215219349.

The spelling of 492143688 in words is "four hundred ninety-two million, one hundred forty-three thousand, six hundred eighty-eight".