228695320 has 32 divisors (see below), whose sum is σ = 588074400. Its totient is φ = 78409728.

The previous prime is 228695309. The next prime is 228695353. The reversal of 228695320 is 23596822.

It is a self number, because there is not a number n which added to its sum of digits gives 228695320.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408105 + ... + 408664.

It is an arithmetic number, because the mean of its divisors is an integer number (18377325).

Almost surely, 2^228695320 is an apocalyptic number.

228695320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228695320 is an abundant number, since it is smaller than the sum of its proper divisors (359379080).

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

228695320 is a wasteful number, since it uses less digits than its factorization.

228695320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816787 (or 816783 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 228695320 is about 15122.6756891762. The cubic root of 228695320 is about 611.5318660775.

The spelling of 228695320 in words is "two hundred twenty-eight million, six hundred ninety-five thousand, three hundred twenty".