13430220 has 24 divisors (see below), whose sum is σ = 37604784. Its totient is φ = 3581376.

The previous prime is 13430213. The next prime is 13430227. The reversal of 13430220 is 2203431.

It is an interprime number because it is at equal distance from previous prime (13430213) and next prime (13430227).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 13430220.

It is not an unprimeable number, because it can be changed into a prime (13430227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111859 + ... + 111978.

It is an arithmetic number, because the mean of its divisors is an integer number (1566866).

Almost surely, 2^13430220 is an apocalyptic number.

13430220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13430220 is an abundant number, since it is smaller than the sum of its proper divisors (24174564).

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

13430220 is a wasteful number, since it uses less digits than its factorization.

13430220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223849 (or 223847 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 13430220 is about 3664.7264563675. The cubic root of 13430220 is about 237.6991939213.

Adding to 13430220 its reverse (2203431), we get a palindrome (15633651).

The spelling of 13430220 in words is "thirteen million, four hundred thirty thousand, two hundred twenty".