13430520 has 48 divisors (see below), whose sum is σ = 43650360. Its totient is φ = 3581376.

The previous prime is 13430507. The next prime is 13430539. The reversal of 13430520 is 2503431.

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

It is a junction number, because it is equal to n+sod(n) for n = 13430493 and 13430502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18294 + ... + 19013.

Almost surely, 2^13430520 is an apocalyptic number.

13430520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13430520 is an abundant number, since it is smaller than the sum of its proper divisors (30219840).

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

13430520 is a wasteful number, since it uses less digits than its factorization.

13430520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37324 (or 37317 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 13430520 is about 3664.7673868883. The cubic root of 13430520 is about 237.7009637912.

Adding to 13430520 its reverse (2503431), we get a palindrome (15933951).

The spelling of 13430520 in words is "thirteen million, four hundred thirty thousand, five hundred twenty".