8140284 has 48 divisors (see below), whose sum is σ = 22220800. Its totient is φ = 2569968.

The previous prime is 8140261. The next prime is 8140291. The reversal of 8140284 is 4820418.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 69 + ... + 4035.

Almost surely, 2^8140284 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 8140284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11110400).

8140284 is an abundant number, since it is smaller than the sum of its proper divisors (14080516).

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

8140284 is a wasteful number, since it uses less digits than its factorization.

8140284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3999 (or 3991 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 8140284 is about 2853.1182940776. The cubic root of 8140284 is about 201.1622659389.

The spelling of 8140284 in words is "eight million, one hundred forty thousand, two hundred eighty-four".