20043464 has 32 divisors (see below), whose sum is σ = 43547520. Its totient is φ = 8470656.

The previous prime is 20043451. The next prime is 20043467. The reversal of 20043464 is 46434002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20043467) 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, 1637 + ... + 6539.

It is an arithmetic number, because the mean of its divisors is an integer number (1360860).

Almost surely, 2^20043464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20043464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21773760).

20043464 is an abundant number, since it is smaller than the sum of its proper divisors (23504056).

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

20043464 is a wasteful number, since it uses less digits than its factorization.

20043464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4989 (or 4985 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 20043464 is about 4476.9927406687. The cubic root of 20043464 is about 271.6382518028.

Adding to 20043464 its reverse (46434002), we get a palindrome (66477466).

The spelling of 20043464 in words is "twenty million, forty-three thousand, four hundred sixty-four".