8426784 has 48 divisors (see below), whose sum is σ = 22498560. Its totient is φ = 2760960.

The previous prime is 8426767. The next prime is 8426797. The reversal of 8426784 is 4876248.

It is a tau number, because it is divible by the number of its divisors (48).

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, 5137 + ... + 6575.

It is an arithmetic number, because the mean of its divisors is an integer number (468720).

Almost surely, 2^8426784 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 8426784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11249280).

8426784 is an abundant number, since it is smaller than the sum of its proper divisors (14071776).

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

8426784 is a wasteful number, since it uses less digits than its factorization.

8426784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513 (or 1505 counting only the distinct ones).

The product of its digits is 86016, while the sum is 39.

The square root of 8426784 is about 2902.8923507426. The cubic root of 8426784 is about 203.4950989569.

It can be divided in two parts, 842 and 6784, that added together give a triangular number (7626 = T₁₂₃).

The spelling of 8426784 in words is "eight million, four hundred twenty-six thousand, seven hundred eighty-four".