20323648 has 14 divisors (see below), whose sum is σ = 40329866. Its totient is φ = 10161792.

The previous prime is 20323643. The next prime is 20323657. The reversal of 20323648 is 84632302.

It can be written as a sum of positive squares in only one way, i.e., 16908544 + 3415104 = 4112^2 + 1848^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158715 + ... + 158842.

Almost surely, 2^20323648 is an apocalyptic number.

It is an amenable number.

20323648 is a deficient number, since it is larger than the sum of its proper divisors (20006218).

20323648 is an equidigital number, since it uses as much as digits as its factorization.

20323648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317569 (or 317559 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 20323648 is about 4508.1756842430. The cubic root of 20323648 is about 272.8981269098.

The spelling of 20323648 in words is "twenty million, three hundred twenty-three thousand, six hundred forty-eight".