20503632 has 40 divisors (see below), whose sum is σ = 56085696. Its totient is φ = 6432256.

The previous prime is 20503627. The next prime is 20503673. The reversal of 20503632 is 23630502.

It is a junction number, because it is equal to n+sod(n) for n = 20503599 and 20503608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11748 + ... + 13379.

Almost surely, 2^20503632 is an apocalyptic number.

It is an amenable number.

20503632 is an abundant number, since it is smaller than the sum of its proper divisors (35582064).

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

20503632 is a wasteful number, since it uses less digits than its factorization.

20503632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25155 (or 25149 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 20503632 is about 4528.0936386078. The cubic root of 20503632 is about 273.7013457869.

The spelling of 20503632 in words is "twenty million, five hundred three thousand, six hundred thirty-two".