13473840 has 80 divisors (see below), whose sum is σ = 43140096. Its totient is φ = 3475200.

The previous prime is 13473833. The next prime is 13473841. The reversal of 13473840 is 4837431.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 13473798 and 13473807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13473841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6535 + ... + 8345.

Almost surely, 2^13473840 is an apocalyptic number.

13473840 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 13473840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21570048).

13473840 is an abundant number, since it is smaller than the sum of its proper divisors (29666256).

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

13473840 is a wasteful number, since it uses less digits than its factorization.

13473840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858 (or 1852 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 13473840 is about 3670.6729628230. The cubic root of 13473840 is about 237.9562568196.

The spelling of 13473840 in words is "thirteen million, four hundred seventy-three thousand, eight hundred forty".