20770733 has 4 divisors (see below), whose sum is σ = 20964960. Its totient is φ = 20576508.

The previous prime is 20770721. The next prime is 20770741. The reversal of 20770733 is 33707702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20770733 - 2¹⁰ = 20769709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20770696 and 20770705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20770703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96953 + ... + 97166.

It is an arithmetic number, because the mean of its divisors is an integer number (5241240).

Almost surely, 2^20770733 is an apocalyptic number.

It is an amenable number.

20770733 is a deficient number, since it is larger than the sum of its proper divisors (194227).

20770733 is a wasteful number, since it uses less digits than its factorization.

20770733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194226.

The product of its (nonzero) digits is 6174, while the sum is 29.

The square root of 20770733 is about 4557.4919637889. The cubic root of 20770733 is about 274.8847252395.

The spelling of 20770733 in words is "twenty million, seven hundred seventy thousand, seven hundred thirty-three".