228335787 has 32 divisors (see below), whose sum is σ = 361152000. Its totient is φ = 142158240.

The previous prime is 228335771. The next prime is 228335803. The reversal of 228335787 is 787533822.

It is an interprime number because it is at equal distance from previous prime (228335771) and next prime (228335803).

It is not a de Polignac number, because 228335787 - 2⁴ = 228335771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228335747) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 33289 + ... + 39557.

It is an arithmetic number, because the mean of its divisors is an integer number (11286000).

Almost surely, 2^228335787 is an apocalyptic number.

228335787 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

228335787 is a deficient number, since it is larger than the sum of its proper divisors (132816213).

228335787 is a wasteful number, since it uses less digits than its factorization.

228335787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6368 (or 6362 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 228335787 is about 15110.7837983342. The cubic root of 228335787 is about 611.2112339448.

The spelling of 228335787 in words is "two hundred twenty-eight million, three hundred thirty-five thousand, seven hundred eighty-seven".