21829064 has 16 divisors (see below), whose sum is σ = 41009100. Its totient is φ = 10893312.

The previous prime is 21828973. The next prime is 21829091. The reversal of 21829064 is 46092812.

It can be written as a sum of positive squares in 2 ways, for example, as 21808900 + 20164 = 4670^2 + 142^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21829064.

It is an unprimeable number.

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, 2252 + ... + 6980.

Almost surely, 2^21829064 is an apocalyptic number.

It is an amenable number.

21829064 is a deficient number, since it is larger than the sum of its proper divisors (19180036).

21829064 is a wasteful number, since it uses less digits than its factorization.

21829064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5312 (or 5308 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 21829064 is about 4672.1583877262. The cubic root of 21829064 is about 279.4763341575.

The spelling of 21829064 in words is "twenty-one million, eight hundred twenty-nine thousand, sixty-four".