8090040 has 64 divisors (see below), whose sum is σ = 27740160. Its totient is φ = 1848960.

The previous prime is 8089967. The next prime is 8090041. The reversal of 8090040 is 400908.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 8089989 and 8090016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8090041) 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, 3976 + ... + 5655.

It is an arithmetic number, because the mean of its divisors is an integer number (433440).

Almost surely, 2^8090040 is an apocalyptic number.

It is an amenable number.

8090040 is an abundant number, since it is smaller than the sum of its proper divisors (19650120).

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

8090040 is a wasteful number, since it uses less digits than its factorization.

8090040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9652 (or 9648 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 8090040 is about 2844.2995622824. The cubic root of 8090040 is about 200.7475358034.

Adding to 8090040 its reverse (400908), we get a palindrome (8490948).

The spelling of 8090040 in words is "eight million, ninety thousand, forty".