821004474 has 16 divisors (see below), whose sum is σ = 1642715712. Its totient is φ = 273550368.

The previous prime is 821004467. The next prime is 821004487. The reversal of 821004474 is 474400128.

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, 13699 + ... + 42774.

It is an arithmetic number, because the mean of its divisors is an integer number (102669732).

Almost surely, 2^821004474 is an apocalyptic number.

821004474 is an abundant number, since it is smaller than the sum of its proper divisors (821711238).

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

821004474 is a wasteful number, since it uses less digits than its factorization.

821004474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58901.

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 821004474 is about 28653.1756355208. The cubic root of 821004474 is about 936.3721924553.

The spelling of 821004474 in words is "eight hundred twenty-one million, four thousand, four hundred seventy-four".