13433420 has 144 divisors (see below), whose sum is σ = 38789184. Its totient is φ = 3801600.

The previous prime is 13433419. The next prime is 13433429. The reversal of 13433420 is 2433431.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 13433392 and 13433401.

It is not an unprimeable number, because it can be changed into a prime (13433429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 220190 + ... + 220250.

Almost surely, 2^13433420 is an apocalyptic number.

13433420 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 13433420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19394592).

13433420 is an abundant number, since it is smaller than the sum of its proper divisors (25355764).

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

13433420 is a wasteful number, since it uses less digits than its factorization.

13433420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 13433420 is about 3665.1630250236. The cubic root of 13433420 is about 237.7180711751.

Adding to 13433420 its reverse (2433431), we get a palindrome (15866851).

The spelling of 13433420 in words is "thirteen million, four hundred thirty-three thousand, four hundred twenty".