228908293536 has 144 divisors (see below), whose sum is σ = 661331109600. Its totient is φ = 69278376960.

The previous prime is 228908293451. The next prime is 228908293553. The reversal of 228908293536 is 635392809822.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 874015 + ... + 1105313.

It is an arithmetic number, because the mean of its divisors is an integer number (4592577150).

Almost surely, 2^228908293536 is an apocalyptic number.

228908293536 is a gapful number since it is divisible by the number (26) 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 228908293536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330665554800).

228908293536 is an abundant number, since it is smaller than the sum of its proper divisors (432422816064).

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

228908293536 is a wasteful number, since it uses less digits than its factorization.

228908293536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231399 (or 231378 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 57.

The spelling of 228908293536 in words is "two hundred twenty-eight billion, nine hundred eight million, two hundred ninety-three thousand, five hundred thirty-six".