20748741 has 16 divisors (see below), whose sum is σ = 31362240. Its totient is φ = 12096000.

The previous prime is 20748727. The next prime is 20748751. The reversal of 20748741 is 14784702.

It is not a de Polignac number, because 20748741 - 2⁵ = 20748709 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20748701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13260 + ... + 14741.

It is an arithmetic number, because the mean of its divisors is an integer number (1960140).

Almost surely, 2^20748741 is an apocalyptic number.

It is an amenable number.

20748741 is a deficient number, since it is larger than the sum of its proper divisors (10613499).

20748741 is a wasteful number, since it uses less digits than its factorization.

20748741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28036.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 20748741 is about 4555.0785942726. The cubic root of 20748741 is about 274.7876752268.

The spelling of 20748741 in words is "twenty million, seven hundred forty-eight thousand, seven hundred forty-one".