20648336 has 20 divisors (see below), whose sum is σ = 42360012. Its totient is φ = 9716736.

The previous prime is 20648333. The next prime is 20648357. The reversal of 20648336 is 63384602.

It can be written as a sum of positive squares in 2 ways, for example, as 16000000 + 4648336 = 4000^2 + 2156^2 .

It is not an unprimeable number, because it can be changed into a prime (20648333) 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, 37685 + ... + 38228.

Almost surely, 2^20648336 is an apocalyptic number.

It is an amenable number.

20648336 is an abundant number, since it is smaller than the sum of its proper divisors (21711676).

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

20648336 is a wasteful number, since it uses less digits than its factorization.

20648336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75938 (or 75932 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 20648336 is about 4544.0440138713. The cubic root of 20648336 is about 274.3437176852.

The spelling of 20648336 in words is "twenty million, six hundred forty-eight thousand, three hundred thirty-six".