20752733 has 16 divisors (see below), whose sum is σ = 23141376. Its totient is φ = 18520320.

The previous prime is 20752729. The next prime is 20752741. The reversal of 20752733 is 33725702.

It is not a de Polignac number, because 20752733 - 2² = 20752729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20752696 and 20752705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20752763) 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, 27560 + ... + 28302.

It is an arithmetic number, because the mean of its divisors is an integer number (1446336).

Almost surely, 2^20752733 is an apocalyptic number.

It is an amenable number.

20752733 is a deficient number, since it is larger than the sum of its proper divisors (2388643).

20752733 is a wasteful number, since it uses less digits than its factorization.

20752733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844.

The product of its (nonzero) digits is 8820, while the sum is 29.

The square root of 20752733 is about 4555.5167654175. The cubic root of 20752733 is about 274.8052968913.

The spelling of 20752733 in words is "twenty million, seven hundred fifty-two thousand, seven hundred thirty-three".