228620832 has 96 divisors (see below), whose sum is σ = 659534400. Its totient is φ = 68766720.

The previous prime is 228620783. The next prime is 228620837. The reversal of 228620832 is 238026822.

228620832 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 (33).

It is a junction number, because it is equal to n+sod(n) for n = 228620793 and 228620802.

It is not an unprimeable number, because it can be changed into a prime (228620837) 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, 156618 + ... + 158070.

It is an arithmetic number, because the mean of its divisors is an integer number (6870150).

Almost surely, 2^228620832 is an apocalyptic number.

228620832 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228620832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329767200).

228620832 is an abundant number, since it is smaller than the sum of its proper divisors (430913568).

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

228620832 is a wasteful number, since it uses less digits than its factorization.

228620832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626 (or 1618 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 228620832 is about 15120.2126969167. The cubic root of 228620832 is about 611.4654651675.

The spelling of 228620832 in words is "two hundred twenty-eight million, six hundred twenty thousand, eight hundred thirty-two".