8515140 has 48 divisors (see below), whose sum is σ = 24037440. Its totient is φ = 2252160.

The previous prime is 8515127. The next prime is 8515141. The reversal of 8515140 is 415158.

It is a self number, because there is not a number n which added to its sum of digits gives 8515140.

It is not an unprimeable number, because it can be changed into a prime (8515141) 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, 7830 + ... + 8850.

It is an arithmetic number, because the mean of its divisors is an integer number (500780).

Almost surely, 2^8515140 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 8515140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12018720).

8515140 is an abundant number, since it is smaller than the sum of its proper divisors (15522300).

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

8515140 is a wasteful number, since it uses less digits than its factorization.

8515140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172 (or 1170 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 8515140 is about 2918.0712808292. The cubic root of 8515140 is about 204.2038523596.

It can be divided in two parts, 85 and 15140, that added together give a triangular number (15225 = T₁₇₄).

The spelling of 8515140 in words is "eight million, five hundred fifteen thousand, one hundred forty".