13428040 has 64 divisors (see below), whose sum is σ = 31901760. Its totient is φ = 5080320.

The previous prime is 13427983. The next prime is 13428049. The reversal of 13428040 is 4082431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13428049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63535 + ... + 63745.

It is an arithmetic number, because the mean of its divisors is an integer number (498465).

Almost surely, 2^13428040 is an apocalyptic number.

13428040 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 13428040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15950880).

13428040 is an abundant number, since it is smaller than the sum of its proper divisors (18473720).

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

13428040 is a wasteful number, since it uses less digits than its factorization.

13428040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 13428040 is about 3664.4290141849. The cubic root of 13428040 is about 237.6863320748.

The spelling of 13428040 in words is "thirteen million, four hundred twenty-eight thousand, forty".