20744941 has 16 divisors (see below), whose sum is σ = 25375360. Its totient is φ = 16562880.

The previous prime is 20744939. The next prime is 20744957. The reversal of 20744941 is 14944702.

20744941 = 136² + 137² + ... + 401².

It is a cyclic number.

It is not a de Polignac number, because 20744941 - 2¹ = 20744939 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20747941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6835 + ... + 9391.

It is an arithmetic number, because the mean of its divisors is an integer number (1585960).

Almost surely, 2^20744941 is an apocalyptic number.

It is an amenable number.

20744941 is a deficient number, since it is larger than the sum of its proper divisors (4630419).

20744941 is a wasteful number, since it uses less digits than its factorization.

20744941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2644.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 20744941 is about 4554.6614583304. The cubic root of 20744941 is about 274.7708989974.

The spelling of 20744941 in words is "twenty million, seven hundred forty-four thousand, nine hundred forty-one".