8750640 has 120 divisors (see below), whose sum is σ = 28913328. Its totient is φ = 2188800.

The previous prime is 8750639. The next prime is 8750641. The reversal of 8750640 is 460578.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8750639) and next prime (8750641).

It is a tau number, because it is divible by the number of its divisors (120).

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 = 8750598 and 8750607.

It is not an unprimeable number, because it can be changed into a prime (8750641) 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, 86590 + ... + 86690.

Almost surely, 2^8750640 is an apocalyptic number.

8750640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8750640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14456664).

8750640 is an abundant number, since it is smaller than the sum of its proper divisors (20162688).

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

8750640 is a wasteful number, since it uses less digits than its factorization.

8750640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 8750640 is about 2958.1480693163. The cubic root of 8750640 is about 206.0692889110.

The spelling of 8750640 in words is "eight million, seven hundred fifty thousand, six hundred forty".