228142647 has 6 divisors (see below), whose sum is σ = 329539392. Its totient is φ = 152095092.

The previous prime is 228142639. The next prime is 228142661. The reversal of 228142647 is 746241822.

228142647 is a `hidden beast` number, since 2 + 2 + 8 + 1 + 4 + 2 + 647 = 666.

It is not a de Polignac number, because 228142647 - 2³ = 228142639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228142637) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12674583 + ... + 12674600.

It is an arithmetic number, because the mean of its divisors is an integer number (54923232).

Almost surely, 2^228142647 is an apocalyptic number.

228142647 is a deficient number, since it is larger than the sum of its proper divisors (101396745).

228142647 is a wasteful number, since it uses less digits than its factorization.

228142647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25349189 (or 25349186 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 228142647 is about 15104.3916461405. The cubic root of 228142647 is about 611.0388523844.

The spelling of 228142647 in words is "two hundred twenty-eight million, one hundred forty-two thousand, six hundred forty-seven".