13430840 has 16 divisors (see below), whose sum is σ = 30219480. Its totient is φ = 5372320.

The previous prime is 13430839. The next prime is 13430849. The reversal of 13430840 is 4803431.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13430849) 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 3 ways as a sum of consecutive naturals, for example, 167846 + ... + 167925.

Almost surely, 2^13430840 is an apocalyptic number.

13430840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13430840 is an abundant number, since it is smaller than the sum of its proper divisors (16788640).

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

13430840 is a wasteful number, since it uses less digits than its factorization.

13430840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335782 (or 335778 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 13430840 is about 3664.8110456066. The cubic root of 13430840 is about 237.7028516234.

The spelling of 13430840 in words is "thirteen million, four hundred thirty thousand, eight hundred forty".