20030832 has 60 divisors (see below), whose sum is σ = 56600544. Its totient is φ = 6612480.

The previous prime is 20030831. The next prime is 20030839. The reversal of 20030832 is 23803002.

It is a super-2 number, since 2×20030832² = 802468461224448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030831) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 15657 + ... + 16887.

Almost surely, 2^20030832 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 20030832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28300272).

20030832 is an abundant number, since it is smaller than the sum of its proper divisors (36569712).

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

20030832 is a wasteful number, since it uses less digits than its factorization.

20030832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358 (or 1349 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 20030832 is about 4475.5817498958. The cubic root of 20030832 is about 271.5811749174.

Adding to 20030832 its reverse (23803002), we get a palindrome (43833834).

The spelling of 20030832 in words is "twenty million, thirty thousand, eight hundred thirty-two".