20632733 has 16 divisors (see below), whose sum is σ = 23255232. Its totient is φ = 18144000.

The previous prime is 20632709. The next prime is 20632751. The reversal of 20632733 is 33723602.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20632733 is a prime.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20632753) 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, 85493 + ... + 85733.

It is an arithmetic number, because the mean of its divisors is an integer number (1453452).

Almost surely, 2^20632733 is an apocalyptic number.

It is an amenable number.

20632733 is a deficient number, since it is larger than the sum of its proper divisors (2622499).

20632733 is a wasteful number, since it uses less digits than its factorization.

20632733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476.

The product of its (nonzero) digits is 4536, while the sum is 26.

The square root of 20632733 is about 4542.3268266385. The cubic root of 20632733 is about 274.2745972858.

The spelling of 20632733 in words is "twenty million, six hundred thirty-two thousand, seven hundred thirty-three".