20966624 has 24 divisors (see below), whose sum is σ = 47175408. Its totient is φ = 8985600.

The previous prime is 20966611. The next prime is 20966651. The reversal of 20966624 is 42666902.

It is a congruent number.

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, 46577 + ... + 47024.

It is an arithmetic number, because the mean of its divisors is an integer number (1965642).

Almost surely, 2^20966624 is an apocalyptic number.

It is an amenable number.

20966624 is an abundant number, since it is smaller than the sum of its proper divisors (26208784).

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

20966624 is an equidigital number, since it uses as much as digits as its factorization.

20966624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93618 (or 93610 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 20966624 is about 4578.9326267155. The cubic root of 20966624 is about 275.7461784645.

The spelling of 20966624 in words is "twenty million, nine hundred sixty-six thousand, six hundred twenty-four".