228143756 has 24 divisors (see below), whose sum is σ = 414309504. Its totient is φ = 109808640.

The previous prime is 228143753. The next prime is 228143759. The reversal of 228143756 is 657341822.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (228143753) and next prime (228143759).

It is not an unprimeable number, because it can be changed into a prime (228143753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19166 + ... + 28698.

It is an arithmetic number, because the mean of its divisors is an integer number (17262896).

Almost surely, 2^228143756 is an apocalyptic number.

It is an amenable number.

228143756 is a deficient number, since it is larger than the sum of its proper divisors (186165748).

228143756 is a wasteful number, since it uses less digits than its factorization.

228143756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9761 (or 9759 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 228143756 is about 15104.4283572732. The cubic root of 228143756 is about 611.0398424682.

The spelling of 228143756 in words is "two hundred twenty-eight million, one hundred forty-three thousand, seven hundred fifty-six".