228763647 has 12 divisors (see below), whose sum is σ = 377641680. Its totient is φ = 130722048.

The previous prime is 228763643. The next prime is 228763649. The reversal of 228763647 is 746367822.

228763647 is a `hidden beast` number, since 2 + 2 + 8 + 7 + 636 + 4 + 7 = 666.

It is not a de Polignac number, because 228763647 - 2² = 228763643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228763643) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1815522 + ... + 1815647.

It is an arithmetic number, because the mean of its divisors is an integer number (31470140).

Almost surely, 2^228763647 is an apocalyptic number.

228763647 is a deficient number, since it is larger than the sum of its proper divisors (148878033).

228763647 is a wasteful number, since it uses less digits than its factorization.

228763647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3631182 (or 3631179 counting only the distinct ones).

The product of its digits is 677376, while the sum is 45.

The square root of 228763647 is about 15124.9346114289. The cubic root of 228763647 is about 611.5927622037.

The spelling of 228763647 in words is "two hundred twenty-eight million, seven hundred sixty-three thousand, six hundred forty-seven".