20763743 has 16 divisors (see below), whose sum is σ = 27879936. Its totient is φ = 14934240.

The previous prime is 20763731. The next prime is 20763761. The reversal of 20763743 is 34736702.

It is a cyclic number.

It is not a de Polignac number, because 20763743 - 2⁴ = 20763727 is a prime.

It is a super-2 number, since 2×20763743² = 862266046740098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20763763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9371 + ... + 11372.

It is an arithmetic number, because the mean of its divisors is an integer number (1742496).

Almost surely, 2^20763743 is an apocalyptic number.

20763743 is a deficient number, since it is larger than the sum of its proper divisors (7116193).

20763743 is a wasteful number, since it uses less digits than its factorization.

20763743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20774.

The product of its (nonzero) digits is 21168, while the sum is 32.

The square root of 20763743 is about 4556.7250301066. The cubic root of 20763743 is about 274.8538860163.

The spelling of 20763743 in words is "twenty million, seven hundred sixty-three thousand, seven hundred forty-three".