819990048 has 48 divisors (see below), whose sum is σ = 2202542496. Its totient is φ = 266972160.

The previous prime is 819990023. The next prime is 819990077. The reversal of 819990048 is 840099918.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 819989979 and 819990006.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95193 + ... + 103448.

It is an arithmetic number, because the mean of its divisors is an integer number (45886302).

Almost surely, 2^819990048 is an apocalyptic number.

It is an amenable number.

819990048 is an abundant number, since it is smaller than the sum of its proper divisors (1382552448).

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

819990048 is a wasteful number, since it uses less digits than its factorization.

819990048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198697 (or 198689 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 48.

The square root of 819990048 is about 28635.4683565679. The cubic root of 819990048 is about 935.9863757240.

The spelling of 819990048 in words is "eight hundred nineteen million, nine hundred ninety thousand, forty-eight".