8287140 has 48 divisors (see below), whose sum is σ = 23607360. Its totient is φ = 2171520.

The previous prime is 8287121. The next prime is 8287141. The reversal of 8287140 is 417828.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 8287098 and 8287107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8287141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2370 + ... + 4710.

It is an arithmetic number, because the mean of its divisors is an integer number (491820).

Almost surely, 2^8287140 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 8287140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11803680).

8287140 is an abundant number, since it is smaller than the sum of its proper divisors (15320220).

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

8287140 is a wasteful number, since it uses less digits than its factorization.

8287140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412 (or 2410 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 8287140 is about 2878.7393074052. The cubic root of 8287140 is about 202.3647626221.

The spelling of 8287140 in words is "eight million, two hundred eighty-seven thousand, one hundred forty".