21230108 has 12 divisors (see below), whose sum is σ = 37203600. Its totient is φ = 10600512.

The previous prime is 21230047. The next prime is 21230123. The reversal of 21230108 is 80103212.

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, 68 + ... + 6516.

It is an arithmetic number, because the mean of its divisors is an integer number (3100300).

Almost surely, 2^21230108 is an apocalyptic number.

It is an amenable number.

21230108 is a deficient number, since it is larger than the sum of its proper divisors (15973492).

21230108 is a wasteful number, since it uses less digits than its factorization.

21230108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7276 (or 7274 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 21230108 is about 4607.6141331496. The cubic root of 21230108 is about 276.8964584972.

The spelling of 21230108 in words is "twenty-one million, two hundred thirty thousand, one hundred eight".