1992402288 has 60 divisors (see below), whose sum is σ = 5681187720. Its totient is φ = 651600768.

The previous prime is 1992402259. The next prime is 1992402299. The reversal of 1992402288 is 8822042991.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122898 + ... + 138161.

It is an arithmetic number, because the mean of its divisors is an integer number (94686462).

Almost surely, 2^1992402288 is an apocalyptic number.

1992402288 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1992402288 is an abundant number, since it is smaller than the sum of its proper divisors (3688785432).

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

1992402288 is a wasteful number, since it uses less digits than its factorization.

1992402288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261126 (or 261117 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 1992402288 is about 44636.3337204121. Note that the first 3 decimals coincide. The cubic root of 1992402288 is about 1258.3236058173.

The spelling of 1992402288 in words is "one billion, nine hundred ninety-two million, four hundred two thousand, two hundred eighty-eight".