817412420 has 24 divisors (see below), whose sum is σ = 1872618048. Its totient is φ = 297240800.

The previous prime is 817412417. The next prime is 817412423. The reversal of 817412420 is 24214718.

It is an interprime number because it is at equal distance from previous prime (817412417) and next prime (817412423).

It is not an unprimeable number, because it can be changed into a prime (817412423) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1857536 + ... + 1857975.

It is an arithmetic number, because the mean of its divisors is an integer number (78025752).

Almost surely, 2^817412420 is an apocalyptic number.

It is an amenable number.

817412420 is an abundant number, since it is smaller than the sum of its proper divisors (1055205628).

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

817412420 is a wasteful number, since it uses less digits than its factorization.

817412420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3715531 (or 3715529 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 817412420 is about 28590.4253203761. The cubic root of 817412420 is about 935.0045926166.

The spelling of 817412420 in words is "eight hundred seventeen million, four hundred twelve thousand, four hundred twenty".