13445838 has 80 divisors (see below), whose sum is σ = 35126784. Its totient is φ = 3764880.

The previous prime is 13445813. The next prime is 13445843. The reversal of 13445838 is 83854431.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 80431 + ... + 80597.

Almost surely, 2^13445838 is an apocalyptic number.

13445838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13445838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17563392).

13445838 is an abundant number, since it is smaller than the sum of its proper divisors (21680946).

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

13445838 is a wasteful number, since it uses less digits than its factorization.

13445838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 250 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 13445838 is about 3666.8566920457. The cubic root of 13445838 is about 237.7912983419.

The spelling of 13445838 in words is "thirteen million, four hundred forty-five thousand, eight hundred thirty-eight".