228605263947 has 12 divisors (see below), whose sum is σ = 330216246360. Its totient is φ = 152399520288.

The previous prime is 228605263937. The next prime is 228605263961. The reversal of 228605263947 is 749362506822.

228605263947 is a `hidden beast` number, since 2 + 2 + 8 + 605 + 26 + 3 + 9 + 4 + 7 = 666.

It is not a de Polignac number, because 228605263947 - 2¹⁰ = 228605262923 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 228605263893 and 228605263902.

It is not an unprimeable number, because it can be changed into a prime (228605263927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54204 + ... + 678342.

It is an arithmetic number, because the mean of its divisors is an integer number (27518020530).

Almost surely, 2^228605263947 is an apocalyptic number.

228605263947 is a deficient number, since it is larger than the sum of its proper divisors (101610982413).

228605263947 is a wasteful number, since it uses less digits than its factorization.

228605263947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664842 (or 664839 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 228605263947 in words is "two hundred twenty-eight billion, six hundred five million, two hundred sixty-three thousand, nine hundred forty-seven".