228516590 has 16 divisors (see below), whose sum is σ = 411516720. Its totient is φ = 91365120.

The previous prime is 228516571. The next prime is 228516599. The reversal of 228516590 is 95615822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228516599) 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, 28085 + ... + 35295.

It is an arithmetic number, because the mean of its divisors is an integer number (25719795).

Almost surely, 2^228516590 is an apocalyptic number.

228516590 is a deficient number, since it is larger than the sum of its proper divisors (183000130).

228516590 is a wasteful number, since it uses less digits than its factorization.

228516590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10387.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 228516590 is about 15116.7651962978. The cubic root of 228516590 is about 611.3725164007.

The spelling of 228516590 in words is "two hundred twenty-eight million, five hundred sixteen thousand, five hundred ninety".