20968532 has 12 divisors (see below), whose sum is σ = 39517716. Its totient is φ = 9677760.

The previous prime is 20968523. The next prime is 20968559. The reversal of 20968532 is 23586902.

It can be written as a sum of positive squares in 2 ways, for example, as 14394436 + 6574096 = 3794^2 + 2564^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20968492 and 20968501.

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, 201569 + ... + 201672.

It is an arithmetic number, because the mean of its divisors is an integer number (3293143).

Almost surely, 2^20968532 is an apocalyptic number.

It is an amenable number.

20968532 is a deficient number, since it is larger than the sum of its proper divisors (18549184).

20968532 is a wasteful number, since it uses less digits than its factorization.

20968532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403258 (or 403256 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 20968532 is about 4579.1409674741. The cubic root of 20968532 is about 275.7545426747.

The spelling of 20968532 in words is "twenty million, nine hundred sixty-eight thousand, five hundred thirty-two".