20189832 has 64 divisors (see below), whose sum is σ = 54828480. Its totient is φ = 6158592.

The previous prime is 20189831. The next prime is 20189843. The reversal of 20189832 is 23898102.

It is a junction number, because it is equal to n+sod(n) for n = 20189793 and 20189802.

It is not an unprimeable number, because it can be changed into a prime (20189831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50658 + ... + 51054.

It is an arithmetic number, because the mean of its divisors is an integer number (856695).

Almost surely, 2^20189832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20189832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27414240).

20189832 is an abundant number, since it is smaller than the sum of its proper divisors (34638648).

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

20189832 is a wasteful number, since it uses less digits than its factorization.

20189832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582 (or 578 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 20189832 is about 4493.3096933107. The cubic root of 20189832 is about 272.2978642927.

It can be divided in two parts, 201898 and 32, that added together give a triangular number (201930 = T₆₃₅).

The spelling of 20189832 in words is "twenty million, one hundred eighty-nine thousand, eight hundred thirty-two".