20272733 has 12 divisors (see below), whose sum is σ = 22135680. Its totient is φ = 18557136.

The previous prime is 20272699. The next prime is 20272741. The reversal of 20272733 is 33727202.

It is not a de Polignac number, because 20272733 - 2¹⁴ = 20256349 is a prime.

It is a Duffinian 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 (20272783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23060 + ... + 23922.

It is an arithmetic number, because the mean of its divisors is an integer number (1844640).

Almost surely, 2^20272733 is an apocalyptic number.

It is an amenable number.

20272733 is a deficient number, since it is larger than the sum of its proper divisors (1862947).

20272733 is a wasteful number, since it uses less digits than its factorization.

20272733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028 (or 1015 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 26.

The square root of 20272733 is about 4502.5251803849. The cubic root of 20272733 is about 272.6700473301.

Adding to 20272733 its reverse (33727202), we get a palindrome (53999935).

The spelling of 20272733 in words is "twenty million, two hundred seventy-two thousand, seven hundred thirty-three".