228321247 has 8 divisors (see below), whose sum is σ = 284660352. Its totient is φ = 177912600.

The previous prime is 228321239. The next prime is 228321283. The reversal of 228321247 is 742123822.

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

It is a cyclic number.

It is not a de Polignac number, because 228321247 - 2³ = 228321239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228321217) 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, 1482529 + ... + 1482682.

It is an arithmetic number, because the mean of its divisors is an integer number (35582544).

Almost surely, 2^228321247 is an apocalyptic number.

228321247 is a deficient number, since it is larger than the sum of its proper divisors (56339105).

228321247 is a wasteful number, since it uses less digits than its factorization.

228321247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965229.

The product of its digits is 10752, while the sum is 31.

The square root of 228321247 is about 15110.3026773126. The cubic root of 228321247 is about 611.1982600696.

The spelling of 228321247 in words is "two hundred twenty-eight million, three hundred twenty-one thousand, two hundred forty-seven".