20703868 has 12 divisors (see below), whose sum is σ = 37211272. Its totient is φ = 10072080.

The previous prime is 20703847. The next prime is 20703913. The reversal of 20703868 is 86830702.

It is a happy number.

It is a super-2 number, since 2×20703868² = 857300300322848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69798 + ... + 70093.

Almost surely, 2^20703868 is an apocalyptic number.

It is an amenable number.

20703868 is a deficient number, since it is larger than the sum of its proper divisors (16507404).

20703868 is a wasteful number, since it uses less digits than its factorization.

20703868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139932 (or 139930 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 20703868 is about 4550.1503271870. The cubic root of 20703868 is about 274.5894391494.

The spelling of 20703868 in words is "twenty million, seven hundred three thousand, eight hundred sixty-eight".