13405500 has 120 divisors (see below), whose sum is σ = 43867824. Its totient is φ = 3564000.

The previous prime is 13405471. The next prime is 13405519. The reversal of 13405500 is 550431.

13405500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 40335 + ... + 40665.

Almost surely, 2^13405500 is an apocalyptic number.

13405500 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 13405500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21933912).

13405500 is an abundant number, since it is smaller than the sum of its proper divisors (30462324).

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

13405500 is a wasteful number, since it uses less digits than its factorization.

13405500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 341 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 13405500 is about 3661.3522092254. The cubic root of 13405500 is about 237.5532659844.

Adding to 13405500 its reverse (550431), we get a palindrome (13955931).

The spelling of 13405500 in words is "thirteen million, four hundred five thousand, five hundred".