21199076 has 24 divisors (see below), whose sum is σ = 38329536. Its totient is φ = 10251360.

The previous prime is 21199069. The next prime is 21199081. The reversal of 21199076 is 67099112.

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 an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33281 + ... + 33911.

It is an arithmetic number, because the mean of its divisors is an integer number (1597064).

Almost surely, 2^21199076 is an apocalyptic number.

It is an amenable number.

21199076 is a deficient number, since it is larger than the sum of its proper divisors (17130460).

21199076 is a wasteful number, since it uses less digits than its factorization.

21199076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899 (or 897 counting only the distinct ones).

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

The square root of 21199076 is about 4604.2454322071. The cubic root of 21199076 is about 276.7614797377.

The spelling of 21199076 in words is "twenty-one million, one hundred ninety-nine thousand, seventy-six".