228463785 has 48 divisors (see below), whose sum is σ = 436295808. Its totient is φ = 109670400.

The previous prime is 228463777. The next prime is 228463787. The reversal of 228463785 is 587364822.

228463785 is a `hidden beast` number, since 2 + 2 + 8 + 4 + 637 + 8 + 5 = 666.

228463785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 228463785 - 2³ = 228463777 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 228463785.

It is not an unprimeable number, because it can be changed into a prime (228463787) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48745 + ... + 53225.

It is an arithmetic number, because the mean of its divisors is an integer number (9089496).

Almost surely, 2^228463785 is an apocalyptic number.

It is an amenable number.

228463785 is a deficient number, since it is larger than the sum of its proper divisors (207832023).

228463785 is a wasteful number, since it uses less digits than its factorization.

228463785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4606 (or 4603 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 228463785 is about 15115.0185246330. The cubic root of 228463785 is about 611.3254213332.

The spelling of 228463785 in words is "two hundred twenty-eight million, four hundred sixty-three thousand, seven hundred eighty-five".