20744064 has 96 divisors (see below), whose sum is σ = 65159640. Its totient is φ = 6282240.

The previous prime is 20744051. The next prime is 20744081. The reversal of 20744064 is 46044702.

It is a tau number, because it is divible by the number of its divisors (96).

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, 11854 + ... + 13490.

Almost surely, 2^20744064 is an apocalyptic number.

20744064 is a gapful number since it is divisible by the number (24) 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 20744064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32579820).

20744064 is an abundant number, since it is smaller than the sum of its proper divisors (44415576).

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

20744064 is a wasteful number, since it uses less digits than its factorization.

20744064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668 (or 1653 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 20744064 is about 4554.5651823198. The cubic root of 20744064 is about 274.7670269292.

Adding to 20744064 its reverse (46044702), we get a palindrome (66788766).

The spelling of 20744064 in words is "twenty million, seven hundred forty-four thousand, sixty-four".