13027840 has 80 divisors (see below), whose sum is σ = 35747712. Its totient is φ = 4460544.

The previous prime is 13027813. The next prime is 13027841. The reversal of 13027840 is 4872031.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (13027841) 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, 17557 + ... + 18283.

Almost surely, 2^13027840 is an apocalyptic number.

13027840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13027840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17873856).

13027840 is an abundant number, since it is smaller than the sum of its proper divisors (22719872).

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

13027840 is an frugal number, since it uses more digits than its factorization.

13027840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757 (or 741 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 13027840 is about 3609.4099240735. The cubic root of 13027840 is about 235.3011982183.

Adding to 13027840 its reverse (4872031), we get a palindrome (17899871).

The spelling of 13027840 in words is "thirteen million, twenty-seven thousand, eight hundred forty".