20563532 has 12 divisors (see below), whose sum is σ = 39257736. Its totient is φ = 9347040.

The previous prime is 20563519. The next prime is 20563537. The reversal of 20563532 is 23536502.

It is not an unprimeable number, because it can be changed into a prime (20563537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233633 + ... + 233720.

It is an arithmetic number, because the mean of its divisors is an integer number (3271478).

Almost surely, 2^20563532 is an apocalyptic number.

20563532 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20563532 is a deficient number, since it is larger than the sum of its proper divisors (18694204).

20563532 is a wasteful number, since it uses less digits than its factorization.

20563532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467368 (or 467366 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 20563532 is about 4534.7030773800. The cubic root of 20563532 is about 273.9676200925.

The spelling of 20563532 in words is "twenty million, five hundred sixty-three thousand, five hundred thirty-two".