228144745 has 8 divisors (see below), whose sum is σ = 273968640. Its totient is φ = 182385840.

The previous prime is 228144727. The next prime is 228144767. The reversal of 228144745 is 547441822.

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

It is not a de Polignac number, because 228144745 - 2⁷ = 228144617 is a prime.

It is a super-2 number, since 2×228144745² = 104100049342230050, which contains 22 as substring.

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, 8155 + ... + 22864.

It is an arithmetic number, because the mean of its divisors is an integer number (34246080).

Almost surely, 2^228144745 is an apocalyptic number.

It is an amenable number.

228144745 is a deficient number, since it is larger than the sum of its proper divisors (45823895).

228144745 is a wasteful number, since it uses less digits than its factorization.

228144745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32495.

The product of its digits is 71680, while the sum is 37.

The square root of 228144745 is about 15104.4610959809. The cubic root of 228144745 is about 611.0407254166.

The spelling of 228144745 in words is "two hundred twenty-eight million, one hundred forty-four thousand, seven hundred forty-five".