8303640 has 32 divisors (see below), whose sum is σ = 24911280. Its totient is φ = 2214272.

The previous prime is 8303623. The next prime is 8303653. The reversal of 8303640 is 463038.

8303640 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 8303640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34479 + ... + 34718.

Almost surely, 2^8303640 is an apocalyptic number.

It is an amenable number.

8303640 is an abundant number, since it is smaller than the sum of its proper divisors (16607640).

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

8303640 is a wasteful number, since it uses less digits than its factorization.

8303640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69211 (or 69207 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 8303640 is about 2881.6037201531. The cubic root of 8303640 is about 202.4989788091.

Adding to 8303640 its reverse (463038), we get a palindrome (8766678).

The spelling of 8303640 in words is "eight million, three hundred three thousand, six hundred forty".