13051840 has 28 divisors (see below), whose sum is σ = 31080456. Its totient is φ = 5220608.

The previous prime is 13051823. The next prime is 13051849. The reversal of 13051840 is 4815031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13051849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20074 + ... + 20713.

Almost surely, 2^13051840 is an apocalyptic number.

13051840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13051840 is an abundant number, since it is smaller than the sum of its proper divisors (18028616).

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

13051840 is an equidigital number, since it uses as much as digits as its factorization.

13051840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40804 (or 40794 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 13051840 is about 3612.7330374662. The cubic root of 13051840 is about 235.4456008850.

Adding to 13051840 its reverse (4815031), we get a palindrome (17866871).

The spelling of 13051840 in words is "thirteen million, fifty-one thousand, eight hundred forty".