20228832 has 96 divisors (see below), whose sum is σ = 63574560. Its totient is φ = 6220800.

The previous prime is 20228807. The next prime is 20228839. The reversal of 20228832 is 23882202.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20228796 and 20228805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20228839) 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 15 ways as a sum of consecutive naturals, for example, 10332 + ... + 12132.

It is an arithmetic number, because the mean of its divisors is an integer number (662235).

Almost surely, 2^20228832 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 20228832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31787280).

20228832 is an abundant number, since it is smaller than the sum of its proper divisors (43345728).

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

20228832 is a wasteful number, since it uses less digits than its factorization.

20228832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833 (or 1819 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 20228832 is about 4497.6473850225. The cubic root of 20228832 is about 272.4730809758.

The spelling of 20228832 in words is "twenty million, two hundred twenty-eight thousand, eight hundred thirty-two".