8474840 has 96 divisors (see below), whose sum is σ = 22407840. Its totient is φ = 2872320.

The previous prime is 8474831. The next prime is 8474849. The reversal of 8474840 is 484748.

It is an interprime number because it is at equal distance from previous prime (8474831) and next prime (8474849).

It is a self number, because there is not a number n which added to its sum of digits gives 8474840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8474849) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82229 + ... + 82331.

It is an arithmetic number, because the mean of its divisors is an integer number (233415).

Almost surely, 2^8474840 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 8474840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11203920).

8474840 is an abundant number, since it is smaller than the sum of its proper divisors (13933000).

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

8474840 is a wasteful number, since it uses less digits than its factorization.

8474840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 35.

The square root of 8474840 is about 2911.1578452568. The cubic root of 8474840 is about 203.8811944400.

The spelling of 8474840 in words is "eight million, four hundred seventy-four thousand, eight hundred forty".