20473743 has 8 divisors (see below), whose sum is σ = 27329328. Its totient is φ = 13633664.

The previous prime is 20473723. The next prime is 20473751. The reversal of 20473743 is 34737402.

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 20473743 - 2⁹ = 20473231 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20473743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20473723) 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, 330 + ... + 6407.

It is an arithmetic number, because the mean of its divisors is an integer number (3416166).

Almost surely, 2^20473743 is an apocalyptic number.

20473743 is a deficient number, since it is larger than the sum of its proper divisors (6855585).

20473743 is a wasteful number, since it uses less digits than its factorization.

20473743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7753.

The product of its (nonzero) digits is 14112, while the sum is 30.

The square root of 20473743 is about 4524.7920394202. The cubic root of 20473743 is about 273.5682858191.

The spelling of 20473743 in words is "twenty million, four hundred seventy-three thousand, seven hundred forty-three".