20803242 has 16 divisors (see below), whose sum is σ = 42392160. Its totient is φ = 6803472.

The previous prime is 20803217. The next prime is 20803249. The reversal of 20803242 is 24230802.

It is not an unprimeable number, because it can be changed into a prime (20803249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32392 + ... + 33027.

It is an arithmetic number, because the mean of its divisors is an integer number (2649510).

Almost surely, 2^20803242 is an apocalyptic number.

20803242 is an abundant number, since it is smaller than the sum of its proper divisors (21588918).

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

20803242 is a wasteful number, since it uses less digits than its factorization.

20803242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65477.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 20803242 is about 4561.0571143102. The cubic root of 20803242 is about 275.0280610484.

The spelling of 20803242 in words is "twenty million, eight hundred three thousand, two hundred forty-two".