228001578 has 16 divisors (see below), whose sum is σ = 521146560. Its totient is φ = 65143296.

The previous prime is 228001573. The next prime is 228001589. The reversal of 228001578 is 875100822.

228001578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (228001573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2714263 + ... + 2714346.

It is an arithmetic number, because the mean of its divisors is an integer number (32571660).

Almost surely, 2^228001578 is an apocalyptic number.

228001578 is an abundant number, since it is smaller than the sum of its proper divisors (293144982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228001578 is a wasteful number, since it uses less digits than its factorization.

228001578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5428621.

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 228001578 is about 15099.7211232526. The cubic root of 228001578 is about 610.9128838092.

The spelling of 228001578 in words is "two hundred twenty-eight million, one thousand, five hundred seventy-eight".