20732768 has 24 divisors (see below), whose sum is σ = 46649232. Its totient is φ = 8885376.

The previous prime is 20732759. The next prime is 20732771. The reversal of 20732768 is 86723702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46055 + ... + 46502.

It is an arithmetic number, because the mean of its divisors is an integer number (1943718).

Almost surely, 2^20732768 is an apocalyptic number.

20732768 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20732768 is an abundant number, since it is smaller than the sum of its proper divisors (25916464).

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

20732768 is an equidigital number, since it uses as much as digits as its factorization.

20732768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92574 (or 92566 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 20732768 is about 4553.3249389869. The cubic root of 20732768 is about 274.7171438738.

The spelling of 20732768 in words is "twenty million, seven hundred thirty-two thousand, seven hundred sixty-eight".