21797096 has 32 divisors (see below), whose sum is σ = 43200000. Its totient is φ = 10293696.

The previous prime is 21797093. The next prime is 21797119. The reversal of 21797096 is 69079712.

It is a happy number.

It is a super-2 number, since 2×21797096² = 950226788066432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21797093) 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 7 ways as a sum of consecutive naturals, for example, 9905 + ... + 11903.

It is an arithmetic number, because the mean of its divisors is an integer number (1350000).

Almost surely, 2^21797096 is an apocalyptic number.

It is an amenable number.

21797096 is a deficient number, since it is larger than the sum of its proper divisors (21402904).

21797096 is a wasteful number, since it uses less digits than its factorization.

21797096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2081 (or 2077 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 21797096 is about 4668.7360173820. The cubic root of 21797096 is about 279.3398393091.

The spelling of 21797096 in words is "twenty-one million, seven hundred ninety-seven thousand, ninety-six".