13173840 has 200 divisors, whose sum is σ = 48612960. Its totient is φ = 3297024.

The previous prime is 13173829. The next prime is 13173841. The reversal of 13173840 is 4837131.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13173841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 123067 + ... + 123173.

Almost surely, 2^13173840 is an apocalyptic number.

13173840 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 13173840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24306480).

13173840 is an abundant number, since it is smaller than the sum of its proper divisors (35439120).

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

13173840 is a wasteful number, since it uses less digits than its factorization.

13173840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 13173840 is about 3629.5784879239. The cubic root of 13173840 is about 236.1769237326.

The spelling of 13173840 in words is "thirteen million, one hundred seventy-three thousand, eight hundred forty".