228607658 has 16 divisors (see below), whose sum is σ = 363359040. Its totient is φ = 107568000.

The previous prime is 228607637. The next prime is 228607661. The reversal of 228607658 is 856706822.

It is a super-2 number, since 2×228607658² = 104522922592489928, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 14183 + ... + 25658.

It is an arithmetic number, because the mean of its divisors is an integer number (22709940).

Almost surely, 2^228607658 is an apocalyptic number.

228607658 is a deficient number, since it is larger than the sum of its proper divisors (134751382).

228607658 is a wasteful number, since it uses less digits than its factorization.

228607658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40013.

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 228607658 is about 15119.7770486208. Note that the first 3 decimals coincide. The cubic root of 228607658 is about 611.4537199550.

The spelling of 228607658 in words is "two hundred twenty-eight million, six hundred seven thousand, six hundred fifty-eight".