20231744 has 28 divisors (see below), whose sum is σ = 43237404. Its totient is φ = 9337344.

The previous prime is 20231707. The next prime is 20231767. The reversal of 20231744 is 44713202.

It can be written as a sum of positive squares in 2 ways, for example, as 8065600 + 12166144 = 2840^2 + 3488^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11327 + ... + 12990.

It is an arithmetic number, because the mean of its divisors is an integer number (1544193).

Almost surely, 2^20231744 is an apocalyptic number.

It is an amenable number.

20231744 is an abundant number, since it is smaller than the sum of its proper divisors (23005660).

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

20231744 is a wasteful number, since it uses less digits than its factorization.

20231744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24342 (or 24332 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 20231744 is about 4497.9710981730. The cubic root of 20231744 is about 272.4861547829.

Adding to 20231744 its reverse (44713202), we get a palindrome (64944946).

The spelling of 20231744 in words is "twenty million, two hundred thirty-one thousand, seven hundred forty-four".