20869532 has 12 divisors (see below), whose sum is σ = 37022496. Its totient is φ = 10291680.

The previous prime is 20869507. The next prime is 20869547. The reversal of 20869532 is 23596802.

It is a junction number, because it is equal to n+sod(n) for n = 20869492 and 20869501.

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, 35444 + ... + 36027.

It is an arithmetic number, because the mean of its divisors is an integer number (3085208).

Almost surely, 2^20869532 is an apocalyptic number.

It is an amenable number.

20869532 is a deficient number, since it is larger than the sum of its proper divisors (16152964).

20869532 is a wasteful number, since it uses less digits than its factorization.

20869532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71548 (or 71546 counting only the distinct ones).

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

The square root of 20869532 is about 4568.3182901370. The cubic root of 20869532 is about 275.3198790133.

The spelling of 20869532 in words is "twenty million, eight hundred sixty-nine thousand, five hundred thirty-two".