20869304 has 8 divisors (see below), whose sum is σ = 39129960. Its totient is φ = 10434648.

The previous prime is 20869297. The next prime is 20869307. The reversal of 20869304 is 40396802.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20869307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1304324 + ... + 1304339.

It is an arithmetic number, because the mean of its divisors is an integer number (4891245).

Almost surely, 2^20869304 is an apocalyptic number.

It is an amenable number.

20869304 is a deficient number, since it is larger than the sum of its proper divisors (18260656).

20869304 is a wasteful number, since it uses less digits than its factorization.

20869304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2608669 (or 2608665 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 20869304 is about 4568.2933355904. The cubic root of 20869304 is about 275.3188763848.

The spelling of 20869304 in words is "twenty million, eight hundred sixty-nine thousand, three hundred four".