20703836 has 12 divisors (see below), whose sum is σ = 36296400. Its totient is φ = 10333440.

The previous prime is 20703833. The next prime is 20703847. The reversal of 20703836 is 63830702.

It is a super-2 number, since 2×20703836² = 857297650229792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20703799 and 20703808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20703833) 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, 1925 + ... + 6716.

It is an arithmetic number, because the mean of its divisors is an integer number (3024700).

Almost surely, 2^20703836 is an apocalyptic number.

It is an amenable number.

20703836 is a deficient number, since it is larger than the sum of its proper divisors (15592564).

20703836 is a wasteful number, since it uses less digits than its factorization.

20703836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9244 (or 9242 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 20703836 is about 4550.1468108183. The cubic root of 20703836 is about 274.5892976804.

The spelling of 20703836 in words is "twenty million, seven hundred three thousand, eight hundred thirty-six".