228442640488 has 32 divisors (see below), whose sum is σ = 429050853000. Its totient is φ = 114029199360.

The previous prime is 228442640471. The next prime is 228442640563. The reversal of 228442640488 is 884046244822.

It can be written as a sum of positive squares in 4 ways, for example, as 179574232644 + 48868407844 = 423762^2 + 221062^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21286708 + ... + 21297436.

Almost surely, 2^228442640488 is an apocalyptic number.

It is an amenable number.

228442640488 is a deficient number, since it is larger than the sum of its proper divisors (200608212512).

228442640488 is a wasteful number, since it uses less digits than its factorization.

228442640488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14965 (or 14961 counting only the distinct ones).

The product of its (nonzero) digits is 6291456, while the sum is 52.

The spelling of 228442640488 in words is "two hundred twenty-eight billion, four hundred forty-two million, six hundred forty thousand, four hundred eighty-eight".