21774696 has 16 divisors (see below), whose sum is σ = 54436800. Its totient is φ = 7258224.

The previous prime is 21774673. The next prime is 21774707. The reversal of 21774696 is 69647712.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 453616 + ... + 453663.

It is an arithmetic number, because the mean of its divisors is an integer number (3402300).

Almost surely, 2^21774696 is an apocalyptic number.

It is an amenable number.

21774696 is an abundant number, since it is smaller than the sum of its proper divisors (32662104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21774696 is a wasteful number, since it uses less digits than its factorization.

21774696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907288 (or 907284 counting only the distinct ones).

The product of its digits is 127008, while the sum is 42.

The square root of 21774696 is about 4666.3364645083. The cubic root of 21774696 is about 279.2441177345.

The spelling of 21774696 in words is "twenty-one million, seven hundred seventy-four thousand, six hundred ninety-six".