8051440 has 40 divisors (see below), whose sum is σ = 19708560. Its totient is φ = 3050496.

The previous prime is 8051437. The next prime is 8051447. The reversal of 8051440 is 441508.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8051447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1129 + ... + 4168.

It is an arithmetic number, because the mean of its divisors is an integer number (492714).

Almost surely, 2^8051440 is an apocalyptic number.

8051440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8051440 is an abundant number, since it is smaller than the sum of its proper divisors (11657120).

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

8051440 is a wasteful number, since it uses less digits than its factorization.

8051440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5329 (or 5323 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 8051440 is about 2837.5059471303. The cubic root of 8051440 is about 200.4277511592.

Adding to 8051440 its reverse (441508), we get a palindrome (8492948).

The spelling of 8051440 in words is "eight million, fifty-one thousand, four hundred forty".