992225640 has 128 divisors (see below), whose sum is σ = 3421440000. Its totient is φ = 225493248.

The previous prime is 992225629. The next prime is 992225653. The reversal of 992225640 is 46522299.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147061 + ... + 153659.

It is an arithmetic number, because the mean of its divisors is an integer number (26730000).

Almost surely, 2^992225640 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 992225640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1710720000).

992225640 is an abundant number, since it is smaller than the sum of its proper divisors (2429214360).

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

992225640 is a wasteful number, since it uses less digits than its factorization.

992225640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6799 (or 6795 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 992225640 is about 31499.6133309601. The cubic root of 992225640 is about 997.4018018797.

The spelling of 992225640 in words is "nine hundred ninety-two million, two hundred twenty-five thousand, six hundred forty".