8434836 has 72 divisors (see below), whose sum is σ = 22748544. Its totient is φ = 2629440.

The previous prime is 8434823. The next prime is 8434843. The reversal of 8434836 is 6384348.

It is a super-2 number, since 2×8434836² = 142292916693792, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

Its product of digits (55296) is a multiple of the sum of its prime divisors (256).

It is a self number, because there is not a number n which added to its sum of digits gives 8434836.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50425 + ... + 50591.

It is an arithmetic number, because the mean of its divisors is an integer number (315952).

Almost surely, 2^8434836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8434836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11374272).

8434836 is an abundant number, since it is smaller than the sum of its proper divisors (14313708).

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

8434836 is a wasteful number, since it uses less digits than its factorization.

8434836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 256 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 8434836 is about 2904.2789122259. The cubic root of 8434836 is about 203.5598931862.

The spelling of 8434836 in words is "eight million, four hundred thirty-four thousand, eight hundred thirty-six".