228133550 has 24 divisors (see below), whose sum is σ = 442779696. Its totient is φ = 87285440.

The previous prime is 228133547. The next prime is 228133559. The reversal of 228133550 is 55331822.

228133550 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228133559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98039 + ... + 100338.

It is an arithmetic number, because the mean of its divisors is an integer number (18449154).

Almost surely, 2^228133550 is an apocalyptic number.

228133550 is a deficient number, since it is larger than the sum of its proper divisors (214646146).

228133550 is a wasteful number, since it uses less digits than its factorization.

228133550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198412 (or 198407 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 228133550 is about 15104.0905055551. The cubic root of 228133550 is about 611.0307307196.

The spelling of 228133550 in words is "two hundred twenty-eight million, one hundred thirty-three thousand, five hundred fifty".