20773743 has 4 divisors (see below), whose sum is σ = 27698328. Its totient is φ = 13849160.

The previous prime is 20773741. The next prime is 20773747. The reversal of 20773743 is 34737702.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20773743 - 2¹ = 20773741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20773741) 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, 3462288 + ... + 3462293.

It is an arithmetic number, because the mean of its divisors is an integer number (6924582).

Almost surely, 2^20773743 is an apocalyptic number.

20773743 is a deficient number, since it is larger than the sum of its proper divisors (6924585).

20773743 is an equidigital number, since it uses as much as digits as its factorization.

20773743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6924584.

The product of its (nonzero) digits is 24696, while the sum is 33.

The square root of 20773743 is about 4557.8221773123. The cubic root of 20773743 is about 274.8980029455.

The spelling of 20773743 in words is "twenty million, seven hundred seventy-three thousand, seven hundred forty-three".