21193196 has 6 divisors (see below), whose sum is σ = 37088100. Its totient is φ = 10596596.

The previous prime is 21193157. The next prime is 21193201. The reversal of 21193196 is 69139112.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2649146 + ... + 2649153.

It is an arithmetic number, because the mean of its divisors is an integer number (6181350).

Almost surely, 2^21193196 is an apocalyptic number.

It is an amenable number.

21193196 is a deficient number, since it is larger than the sum of its proper divisors (15894904).

21193196 is a wasteful number, since it uses less digits than its factorization.

21193196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5298303 (or 5298301 counting only the distinct ones).

The product of its digits is 2916, while the sum is 32.

The square root of 21193196 is about 4603.6068468104. The cubic root of 21193196 is about 276.7358888742.

The spelling of 21193196 in words is "twenty-one million, one hundred ninety-three thousand, one hundred ninety-six".