20773248 has 64 divisors (see below), whose sum is σ = 56401920. Its totient is φ = 6771200.

The previous prime is 20773241. The next prime is 20773253. The reversal of 20773248 is 84237702.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20773241) 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, 17473 + ... + 18623.

It is an arithmetic number, because the mean of its divisors is an integer number (881280).

Almost surely, 2^20773248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20773248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28200960).

20773248 is an abundant number, since it is smaller than the sum of its proper divisors (35628672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20773248 is a wasteful number, since it uses less digits than its factorization.

20773248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215 (or 1203 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 20773248 is about 4557.7678747387. The cubic root of 20773248 is about 274.8958194906.

The spelling of 20773248 in words is "twenty million, seven hundred seventy-three thousand, two hundred forty-eight".