992190820 has 12 divisors (see below), whose sum is σ = 2083600764. Its totient is φ = 396876320.

The previous prime is 992190809. The next prime is 992190869. The reversal of 992190820 is 28091299.

It can be written as a sum of positive squares in 2 ways, for example, as 482153764 + 510037056 = 21958^2 + 22584^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24804751 + ... + 24804790.

It is an arithmetic number, because the mean of its divisors is an integer number (173633397).

Almost surely, 2^992190820 is an apocalyptic number.

It is an amenable number.

992190820 is an abundant number, since it is smaller than the sum of its proper divisors (1091409944).

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

992190820 is a wasteful number, since it uses less digits than its factorization.

992190820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49609550 (or 49609548 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 992190820 is about 31499.0606209138. The cubic root of 992190820 is about 997.3901345278.

The spelling of 992190820 in words is "nine hundred ninety-two million, one hundred ninety thousand, eight hundred twenty".