20245936 has 20 divisors (see below), whose sum is σ = 39448864. Its totient is φ = 10065600.

The previous prime is 20245931. The next prime is 20245943. The reversal of 20245936 is 63954202.

It is a junction number, because it is equal to n+sod(n) for n = 20245898 and 20245907.

It is not an unprimeable number, because it can be changed into a prime (20245931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 600 + ... + 6391.

Almost surely, 2^20245936 is an apocalyptic number.

It is an amenable number.

20245936 is a deficient number, since it is larger than the sum of its proper divisors (19202928).

20245936 is a wasteful number, since it uses less digits than its factorization.

20245936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7180 (or 7174 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 20245936 is about 4499.5484217863. The cubic root of 20245936 is about 272.5498536849.

The spelling of 20245936 in words is "twenty million, two hundred forty-five thousand, nine hundred thirty-six".