228640810896 has 45 divisors (see below), whose sum is σ = 639892772571. Its totient is φ = 76211690976.

The previous prime is 228640810877. The next prime is 228640810907. The reversal of 228640810896 is 698018046822.

The square root of 228640810896 is 478164.

It is a perfect power (a square), and thus also a powerful number.

228640810896 is a `hidden beast` number, since 228 + 6 + 408 + 1 + 0 + 8 + 9 + 6 = 666.

228640810896 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5718045 + ... + 5757891.

Almost surely, 2^228640810896 is an apocalyptic number.

228640810896 is the 478164-th square number.

It is an amenable number.

228640810896 is an abundant number, since it is smaller than the sum of its proper divisors (411251961675).

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

228640810896 is an frugal number, since it uses more digits than its factorization.

228640810896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79708 (or 39852 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The spelling of 228640810896 in words is "two hundred twenty-eight billion, six hundred forty million, eight hundred ten thousand, eight hundred ninety-six".