21495196 has 12 divisors (see below), whose sum is σ = 37705360. Its totient is φ = 10722240.

The previous prime is 21495167. The next prime is 21495197. The reversal of 21495196 is 69159412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21495197) 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, 4365 + ... + 7876.

Almost surely, 2^21495196 is an apocalyptic number.

It is an amenable number.

21495196 is a deficient number, since it is larger than the sum of its proper divisors (16210164).

21495196 is a wasteful number, since it uses less digits than its factorization.

21495196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12684 (or 12682 counting only the distinct ones).

The product of its digits is 19440, while the sum is 37.

The square root of 21495196 is about 4636.2911901648. The cubic root of 21495196 is about 278.0441763380.

The spelling of 21495196 in words is "twenty-one million, four hundred ninety-five thousand, one hundred ninety-six".