928798766440 has 24 divisors (see below), whose sum is σ = 2089810938870. Its totient is φ = 371517068480.

The previous prime is 928798766417. The next prime is 928798766513. The reversal of 928798766440 is 44667897829.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 547964140516 + 380834625924 = 740246^2 + 617118^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 928798766440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6019050 + ... + 6171430.

Almost surely, 2^928798766440 is an apocalyptic number.

It is an amenable number.

928798766440 is an abundant number, since it is smaller than the sum of its proper divisors (1161012172430).

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

928798766440 is an frugal number, since it uses more digits than its factorization.

928798766440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304773 (or 152388 counting only the distinct ones).

The product of its (nonzero) digits is 292626432, while the sum is 70.

The spelling of 928798766440 in words is "nine hundred twenty-eight billion, seven hundred ninety-eight million, seven hundred sixty-six thousand, four hundred forty".