228139274 has 8 divisors (see below), whose sum is σ = 373318848. Its totient is φ = 103699660.

The previous prime is 228139273. The next prime is 228139283. The reversal of 228139274 is 472931822.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (228139271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5184962 + ... + 5185005.

It is an arithmetic number, because the mean of its divisors is an integer number (46664856).

Almost surely, 2^228139274 is an apocalyptic number.

228139274 is a deficient number, since it is larger than the sum of its proper divisors (145179574).

228139274 is a wasteful number, since it uses less digits than its factorization.

228139274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10369980.

The product of its digits is 48384, while the sum is 38.

The square root of 228139274 is about 15104.2799894599. The cubic root of 228139274 is about 611.0358410459.

The spelling of 228139274 in words is "two hundred twenty-eight million, one hundred thirty-nine thousand, two hundred seventy-four".