228181466 has 8 divisors (see below), whose sum is σ = 342494784. Its totient is φ = 114016540.

The previous prime is 228181453. The next prime is 228181487. The reversal of 228181466 is 664181822.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33170 + ... + 39453.

It is an arithmetic number, because the mean of its divisors is an integer number (42811848).

Almost surely, 2^228181466 is an apocalyptic number.

228181466 is a deficient number, since it is larger than the sum of its proper divisors (114313318).

228181466 is a wasteful number, since it uses less digits than its factorization.

228181466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74196.

The product of its digits is 36864, while the sum is 38.

The square root of 228181466 is about 15105.6766151007. The cubic root of 228181466 is about 611.0735069778.

The spelling of 228181466 in words is "two hundred twenty-eight million, one hundred eighty-one thousand, four hundred sixty-six".