20189632 has 28 divisors (see below), whose sum is σ = 40325040. Its totient is φ = 10029056.

The previous prime is 20189629. The next prime is 20189633. The reversal of 20189632 is 23698102.

It is a junction number, because it is equal to n+sod(n) for n = 20189594 and 20189603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20189633) 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, 9744 + ... + 11632.

It is an arithmetic number, because the mean of its divisors is an integer number (1440180).

Almost surely, 2^20189632 is an apocalyptic number.

It is an amenable number.

20189632 is a deficient number, since it is larger than the sum of its proper divisors (20135408).

20189632 is a wasteful number, since it uses less digits than its factorization.

20189632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068 (or 2058 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 20189632 is about 4493.2874379456. The cubic root of 20189632 is about 272.2969651643.

The spelling of 20189632 in words is "twenty million, one hundred eighty-nine thousand, six hundred thirty-two".