20747741 has 8 divisors (see below), whose sum is σ = 23743104. Its totient is φ = 17760240.

The previous prime is 20747737. The next prime is 20747767. The reversal of 20747741 is 14774702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20747741 - 2² = 20747737 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20747698 and 20747707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20747141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5696 + ... + 8598.

It is an arithmetic number, because the mean of its divisors is an integer number (2967888).

Almost surely, 2^20747741 is an apocalyptic number.

It is an amenable number.

20747741 is a deficient number, since it is larger than the sum of its proper divisors (2995363).

20747741 is a wasteful number, since it uses less digits than its factorization.

20747741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3931.

The product of its (nonzero) digits is 10976, while the sum is 32.

The square root of 20747741 is about 4554.9688253598. The cubic root of 20747741 is about 274.7832606282.

The spelling of 20747741 in words is "twenty million, seven hundred forty-seven thousand, seven hundred forty-one".