13433985 has 32 divisors (see below), whose sum is σ = 24053760. Its totient is φ = 7113600.

The previous prime is 13433983. The next prime is 13433999. The reversal of 13433985 is 58933431.

13433985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13433985 - 2¹ = 13433983 is a prime.

Its product of digits (38880) is a multiple of the sum of its prime divisors (720).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13433983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25525 + ... + 26045.

It is an arithmetic number, because the mean of its divisors is an integer number (751680).

Almost surely, 2^13433985 is an apocalyptic number.

13433985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13433985 is a deficient number, since it is larger than the sum of its proper divisors (10619775).

13433985 is a wasteful number, since it uses less digits than its factorization.

13433985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726 (or 720 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 13433985 is about 3665.2401012758. The cubic root of 13433985 is about 237.7214038789.

The spelling of 13433985 in words is "thirteen million, four hundred thirty-three thousand, nine hundred eighty-five".