20693208 has 32 divisors (see below), whose sum is σ = 52113600. Its totient is φ = 6847008.

The previous prime is 20693203. The next prime is 20693209. The reversal of 20693208 is 80239602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20693203) 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, 235 + ... + 6437.

It is an arithmetic number, because the mean of its divisors is an integer number (1628550).

Almost surely, 2^20693208 is an apocalyptic number.

It is an amenable number.

20693208 is an abundant number, since it is smaller than the sum of its proper divisors (31420392).

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

20693208 is a wasteful number, since it uses less digits than its factorization.

20693208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6351 (or 6347 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 20693208 is about 4548.9787864970. The cubic root of 20693208 is about 274.5423042222.

The spelling of 20693208 in words is "twenty million, six hundred ninety-three thousand, two hundred eight".