821094048 has 72 divisors (see below), whose sum is σ = 2338408800. Its totient is φ = 273297024.

The previous prime is 821094031. The next prime is 821094119. The reversal of 821094048 is 840490128.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×821094048² = 1348390871322052608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 245733 + ... + 249051.

It is an arithmetic number, because the mean of its divisors is an integer number (32477900).

Almost surely, 2^821094048 is an apocalyptic number.

It is an amenable number.

821094048 is an abundant number, since it is smaller than the sum of its proper divisors (1517314752).

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

821094048 is a wasteful number, since it uses less digits than its factorization.

821094048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4194 (or 4183 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 821094048 is about 28654.7386657076. The cubic root of 821094048 is about 936.4062448693.

The spelling of 821094048 in words is "eight hundred twenty-one million, ninety-four thousand, forty-eight".