20967328 has 12 divisors (see below), whose sum is σ = 41279490. Its totient is φ = 10483648.

The previous prime is 20967313. The next prime is 20967337. The reversal of 20967328 is 82376902.

It can be written as a sum of positive squares in only one way, i.e., 20684304 + 283024 = 4548^2 + 532^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327583 + ... + 327646.

Almost surely, 2^20967328 is an apocalyptic number.

It is an amenable number.

20967328 is a deficient number, since it is larger than the sum of its proper divisors (20312162).

20967328 is an equidigital number, since it uses as much as digits as its factorization.

20967328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655239 (or 655231 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 20967328 is about 4579.0094998810. The cubic root of 20967328 is about 275.7492646892.

The spelling of 20967328 in words is "twenty million, nine hundred sixty-seven thousand, three hundred twenty-eight".