228143786 has 16 divisors (see below), whose sum is σ = 370987008. Its totient is φ = 104598000.

The previous prime is 228143759. The next prime is 228143809. The reversal of 228143786 is 687341822.

228143786 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25130 + ... + 32981.

It is an arithmetic number, because the mean of its divisors is an integer number (23186688).

Almost surely, 2^228143786 is an apocalyptic number.

228143786 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

228143786 is a deficient number, since it is larger than the sum of its proper divisors (142843222).

228143786 is a wasteful number, since it uses less digits than its factorization.

228143786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58277.

The product of its digits is 129024, while the sum is 41.

The square root of 228143786 is about 15104.4293503595. The cubic root of 228143786 is about 611.0398692513.

The spelling of 228143786 in words is "two hundred twenty-eight million, one hundred forty-three thousand, seven hundred eighty-six".