817428004 has 12 divisors (see below), whose sum is σ = 1492694784. Its totient is φ = 390943784.

The previous prime is 817427987. The next prime is 817428043. The reversal of 817428004 is 400824718.

It is a super-3 number, since 3×817428004³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4442452 + ... + 4442635.

It is an arithmetic number, because the mean of its divisors is an integer number (124391232).

Almost surely, 2^817428004 is an apocalyptic number.

It is an amenable number.

817428004 is a deficient number, since it is larger than the sum of its proper divisors (675266780).

817428004 is a wasteful number, since it uses less digits than its factorization.

817428004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8885114 (or 8885112 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 817428004 is about 28590.6978578698. The cubic root of 817428004 is about 935.0105345453.

The spelling of 817428004 in words is "eight hundred seventeen million, four hundred twenty-eight thousand, four".