821036976 has 40 divisors (see below), whose sum is σ = 2122118640. Its totient is φ = 273536256.

The previous prime is 821036933. The next prime is 821036977. The reversal of 821036976 is 679630128.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (821036977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130806 + ... + 136938.

It is an arithmetic number, because the mean of its divisors is an integer number (53052966).

Almost surely, 2^821036976 is an apocalyptic number.

It is an amenable number.

821036976 is an abundant number, since it is smaller than the sum of its proper divisors (1301081664).

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

821036976 is a wasteful number, since it uses less digits than its factorization.

821036976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8933 (or 8927 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 821036976 is about 28653.7427921729. The cubic root of 821036976 is about 936.3845486882.

The spelling of 821036976 in words is "eight hundred twenty-one million, thirty-six thousand, nine hundred seventy-six".