820085748 has 48 divisors (see below), whose sum is σ = 1967063616. Its totient is φ = 265807360.

The previous prime is 820085737. The next prime is 820085753. The reversal of 820085748 is 847580028.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66163 + ... + 77573.

It is an arithmetic number, because the mean of its divisors is an integer number (40980492).

Almost surely, 2^820085748 is an apocalyptic number.

It is an amenable number.

820085748 is an abundant number, since it is smaller than the sum of its proper divisors (1146977868).

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

820085748 is a wasteful number, since it uses less digits than its factorization.

820085748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11584 (or 11582 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 42.

The square root of 820085748 is about 28637.1393124383. The cubic root of 820085748 is about 936.0227869023.

The spelling of 820085748 in words is "eight hundred twenty million, eighty-five thousand, seven hundred forty-eight".