20740024 has 16 divisors (see below), whose sum is σ = 39252600. Its totient is φ = 10272672.

The previous prime is 20740021. The next prime is 20740063. The reversal of 20740024 is 42004702.

It is a junction number, because it is equal to n+sod(n) for n = 20739983 and 20740010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20740021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11259 + ... + 12970.

Almost surely, 2^20740024 is an apocalyptic number.

It is an amenable number.

20740024 is a deficient number, since it is larger than the sum of its proper divisors (18512576).

20740024 is a wasteful number, since it uses less digits than its factorization.

20740024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24342 (or 24338 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 20740024 is about 4554.1216496708. The cubic root of 20740024 is about 274.7491883987.

Adding to 20740024 its reverse (42004702), we get a palindrome (62744726).

The spelling of 20740024 in words is "twenty million, seven hundred forty thousand, twenty-four".