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20773393 = 237112721
BaseRepresentation
bin100111100111…
…1101000010001
31110002101201221
41033033220101
520304222033
62021125041
7341366554
oct117175021
943071657
1020773393
11107a93a3
126b59781
1343c4464
142a8a69b
151c5512d
hex13cfa11

20773393 has 8 divisors (see below), whose sum is σ = 21983616. Its totient is φ = 19588800.

The previous prime is 20773331. The next prime is 20773399. The reversal of 20773393 is 39337702.

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 20773393 - 213 = 20765201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20773399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4728 + ... + 7993.

It is an arithmetic number, because the mean of its divisors is an integer number (2747952).

Almost surely, 220773393 is an apocalyptic number.

20773393 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20773393 is a deficient number, since it is larger than the sum of its proper divisors (1210223).

20773393 is a wasteful number, since it uses less digits than its factorization.

20773393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12815.

The product of its (nonzero) digits is 23814, while the sum is 34.

The square root of 20773393 is about 4557.7837816202. The cubic root of 20773393 is about 274.8964590921.

The spelling of 20773393 in words is "twenty million, seven hundred seventy-three thousand, three hundred ninety-three".

Divisors: 1 23 71 1633 12721 292583 903191 20773393