20732783 has 2 divisors, whose sum is σ = 20732784. Its totient is φ = 20732782.

The previous prime is 20732779. The next prime is 20732791. The reversal of 20732783 is 38723702.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20732783 - 2² = 20732779 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20732773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10366391 + 10366392.

It is an arithmetic number, because the mean of its divisors is an integer number (10366392).

Almost surely, 2^20732783 is an apocalyptic number.

20732783 is a deficient number, since it is larger than the sum of its proper divisors (1).

20732783 is an equidigital number, since it uses as much as digits as its factorization.

20732783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 20732783 is about 4553.3265861346. The cubic root of 20732783 is about 274.7172101257.

The spelling of 20732783 in words is "twenty million, seven hundred thirty-two thousand, seven hundred eighty-three".