13840545 has 16 divisors (see below), whose sum is σ = 22254912. Its totient is φ = 7344960.

The previous prime is 13840523. The next prime is 13840559. The reversal of 13840545 is 54504831.

It is not a de Polignac number, because 13840545 - 2⁹ = 13840033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 979 + ... + 5351.

It is an arithmetic number, because the mean of its divisors is an integer number (1390932).

Almost surely, 2^13840545 is an apocalyptic number.

13840545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13840545 is a deficient number, since it is larger than the sum of its proper divisors (8414367).

13840545 is a wasteful number, since it uses less digits than its factorization.

13840545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4592.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 13840545 is about 3720.2882952804. The cubic root of 13840545 is about 240.0957083557.

The spelling of 13840545 in words is "thirteen million, eight hundred forty thousand, five hundred forty-five".