8434040 has 64 divisors (see below), whose sum is σ = 20476800. Its totient is φ = 3115008.

The previous prime is 8434037. The next prime is 8434073. The reversal of 8434040 is 404348.

It is a super-2 number, since 2×8434040² = 142266061443200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8433997 and 8434015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53642 + ... + 53798.

It is an arithmetic number, because the mean of its divisors is an integer number (319950).

Almost surely, 2^8434040 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 8434040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10238400).

8434040 is an abundant number, since it is smaller than the sum of its proper divisors (12042760).

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

8434040 is a wasteful number, since it uses less digits than its factorization.

8434040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 8434040 is about 2904.1418698128. The cubic root of 8434040 is about 203.5534896327.

Adding to 8434040 its reverse (404348), we get a palindrome (8838388).

The spelling of 8434040 in words is "eight million, four hundred thirty-four thousand, forty".