20344464 has 60 divisors (see below), whose sum is σ = 65073216. Its totient is φ = 5812416.

The previous prime is 20344453. The next prime is 20344469. The reversal of 20344464 is 46444302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344469) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9084 + ... + 11099.

Almost surely, 2^20344464 is an apocalyptic number.

20344464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20344464 is an abundant number, since it is smaller than the sum of its proper divisors (44728752).

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

20344464 is a wasteful number, since it uses less digits than its factorization.

20344464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20204 (or 20195 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 20344464 is about 4510.4837877993. The cubic root of 20344464 is about 272.9912648656.

Adding to 20344464 its reverse (46444302), we get a palindrome (66788766).

The spelling of 20344464 in words is "twenty million, three hundred forty-four thousand, four hundred sixty-four".