20773337 has 8 divisors (see below), whose sum is σ = 23687496. Its totient is φ = 18047232.

The previous prime is 20773331. The next prime is 20773399. The reversal of 20773337 is 73337702.

It can be written as a sum of positive squares in 4 ways, for example, as 8128201 + 12645136 = 2851^2 + 3556^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20773337 - 2¹⁰ = 20772313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20773331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46778 + ... + 47219.

It is an arithmetic number, because the mean of its divisors is an integer number (2960937).

Almost surely, 2^20773337 is an apocalyptic number.

It is an amenable number.

20773337 is a deficient number, since it is larger than the sum of its proper divisors (2914159).

20773337 is a wasteful number, since it uses less digits than its factorization.

20773337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94027.

The product of its (nonzero) digits is 18522, while the sum is 32.

The square root of 20773337 is about 4557.7776382794. Note that the first 3 decimals coincide. The cubic root of 20773337 is about 274.8962120739.

The spelling of 20773337 in words is "twenty million, seven hundred seventy-three thousand, three hundred thirty-seven".