228999708 has 72 divisors (see below), whose sum is σ = 670924800. Its totient is φ = 64501920.

The previous prime is 228999703. The next prime is 228999713. The reversal of 228999708 is 807999822.

It is an interprime number because it is at equal distance from previous prime (228999703) and next prime (228999713).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228999703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11493 + ... + 24291.

It is an arithmetic number, because the mean of its divisors is an integer number (9318400).

Almost surely, 2^228999708 is an apocalyptic number.

228999708 is a gapful number since it is divisible by the number (28) 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 228999708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335462400).

228999708 is an abundant number, since it is smaller than the sum of its proper divisors (441925092).

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

228999708 is a wasteful number, since it uses less digits than its factorization.

228999708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12887 (or 12882 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The square root of 228999708 is about 15132.7363024669. The cubic root of 228999708 is about 611.8030572249.

The spelling of 228999708 in words is "two hundred twenty-eight million, nine hundred ninety-nine thousand, seven hundred eight".