8023640 has 16 divisors (see below), whose sum is σ = 18053280. Its totient is φ = 3209440.

The previous prime is 8023627. The next prime is 8023651. The reversal of 8023640 is 463208.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100256 + ... + 100335.

It is an arithmetic number, because the mean of its divisors is an integer number (1128330).

Almost surely, 2^8023640 is an apocalyptic number.

It is an amenable number.

8023640 is an abundant number, since it is smaller than the sum of its proper divisors (10029640).

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

8023640 is a wasteful number, since it uses less digits than its factorization.

8023640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200602 (or 200598 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 8023640 is about 2832.6030431389. The cubic root of 8023640 is about 200.1968062729.

Adding to 8023640 its reverse (463208), we get a palindrome (8486848).

The spelling of 8023640 in words is "eight million, twenty-three thousand, six hundred forty".