20288648 has 16 divisors (see below), whose sum is σ = 38135580. Its totient is φ = 10119168.

The previous prime is 20288641. The next prime is 20288651. The reversal of 20288648 is 84688202.

It can be written as a sum of positive squares in 2 ways, for example, as 20232004 + 56644 = 4498^2 + 238^2 .

It is not an unprimeable number, because it can be changed into a prime (20288641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536 + ... + 6392.

Almost surely, 2^20288648 is an apocalyptic number.

It is an amenable number.

20288648 is a deficient number, since it is larger than the sum of its proper divisors (17846932).

20288648 is a wasteful number, since it uses less digits than its factorization.

20288648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6296 (or 6292 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 38.

The square root of 20288648 is about 4504.2921752480. The cubic root of 20288648 is about 272.7413813846.

The spelling of 20288648 in words is "twenty million, two hundred eighty-eight thousand, six hundred forty-eight".