20323044 has 108 divisors (see below), whose sum is σ = 61434828. Its totient is φ = 5644800.

The previous prime is 20323031. The next prime is 20323049. The reversal of 20323044 is 44032302.

It can be written as a sum of positive squares in 2 ways, for example, as 6350400 + 13972644 = 2520^2 + 3738^2 .

It is a super-2 number, since 2×20323044² = 826052234851872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20323049) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 72184 + ... + 72464.

It is an arithmetic number, because the mean of its divisors is an integer number (568841).

Almost surely, 2^20323044 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 20323044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30717414).

20323044 is an abundant number, since it is smaller than the sum of its proper divisors (41111784).

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

20323044 is a wasteful number, since it uses less digits than its factorization.

20323044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 20323044 is about 4508.1086943418. The cubic root of 20323044 is about 272.8954234564.

Adding to 20323044 its reverse (44032302), we get a palindrome (64355346).

The spelling of 20323044 in words is "twenty million, three hundred twenty-three thousand, forty-four".