981628245828 has 72 divisors (see below), whose sum is σ = 2528373687840. Its totient is φ = 321063050880.

The previous prime is 981628245803. The next prime is 981628245841. The reversal of 981628245828 is 828542826189.

981628245828 is a `hidden beast` number, since 9 + 8 + 1 + 6 + 28 + 24 + 582 + 8 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 749650 + ... + 1589097.

It is an arithmetic number, because the mean of its divisors is an integer number (35116301220).

Almost surely, 2^981628245828 is an apocalyptic number.

It is an amenable number.

981628245828 is an abundant number, since it is smaller than the sum of its proper divisors (1546745442012).

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

981628245828 is a wasteful number, since it uses less digits than its factorization.

981628245828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2338977 (or 2338972 counting only the distinct ones).

The product of its digits is 35389440, while the sum is 63.

The spelling of 981628245828 in words is "nine hundred eighty-one billion, six hundred twenty-eight million, two hundred forty-five thousand, eight hundred twenty-eight".