21179096 has 16 divisors (see below), whose sum is σ = 40784640. Its totient is φ = 10303200.

The previous prime is 21179089. The next prime is 21179099. The reversal of 21179096 is 69097112.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21179099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35480 + ... + 36071.

It is an arithmetic number, because the mean of its divisors is an integer number (2549040).

Almost surely, 2^21179096 is an apocalyptic number.

It is an amenable number.

21179096 is a deficient number, since it is larger than the sum of its proper divisors (19605544).

21179096 is a wasteful number, since it uses less digits than its factorization.

21179096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71594 (or 71590 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 21179096 is about 4602.0751840882. The cubic root of 21179096 is about 276.6745037376.

The spelling of 21179096 in words is "twenty-one million, one hundred seventy-nine thousand, ninety-six".