20740544 has 56 divisors (see below), whose sum is σ = 47567088. Its totient is φ = 8867840.

The previous prime is 20740513. The next prime is 20740553. The reversal of 20740544 is 44504702.

It is a hoax number, since the sum of its digits (26) 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 7 ways as a sum of consecutive naturals, for example, 11102 + ... + 12834.

Almost surely, 2^20740544 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 20740544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23783544).

20740544 is an abundant number, since it is smaller than the sum of its proper divisors (26826544).

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

20740544 is a wasteful number, since it uses less digits than its factorization.

20740544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773 (or 1763 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 20740544 is about 4554.1787404537. The cubic root of 20740544 is about 274.7514845770.

The spelling of 20740544 in words is "twenty million, seven hundred forty thousand, five hundred forty-four".