13840580 has 24 divisors (see below), whose sum is σ = 31301592. Its totient is φ = 5110272.

The previous prime is 13840577. The next prime is 13840583. The reversal of 13840580 is 8504831.

It is an interprime number because it is at equal distance from previous prime (13840577) and next prime (13840583).

It can be written as a sum of positive squares in 4 ways, for example, as 430336 + 13410244 = 656^2 + 3662^2 .

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13840583) 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, 26357 + ... + 26876.

It is an arithmetic number, because the mean of its divisors is an integer number (1304233).

Almost surely, 2^13840580 is an apocalyptic number.

13840580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13840580 is an abundant number, since it is smaller than the sum of its proper divisors (17461012).

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

13840580 is a wasteful number, since it uses less digits than its factorization.

13840580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53255 (or 53253 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 13840580 is about 3720.2929992139. The cubic root of 13840580 is about 240.0959107403.

The spelling of 13840580 in words is "thirteen million, eight hundred forty thousand, five hundred eighty".