20038743 has 6 divisors (see below), whose sum is σ = 28944864. Its totient is φ = 13359156.

The previous prime is 20038729. The next prime is 20038747. The reversal of 20038743 is 34783002.

It is not a de Polignac number, because 20038743 - 2⁹ = 20038231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20038747) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1113255 + ... + 1113272.

It is an arithmetic number, because the mean of its divisors is an integer number (4824144).

Almost surely, 2^20038743 is an apocalyptic number.

20038743 is a deficient number, since it is larger than the sum of its proper divisors (8906121).

20038743 is a wasteful number, since it uses less digits than its factorization.

20038743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2226533 (or 2226530 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 20038743 is about 4476.4654583723. The cubic root of 20038743 is about 271.6169230730.

The spelling of 20038743 in words is "twenty million, thirty-eight thousand, seven hundred forty-three".