228216737 has 16 divisors (see below), whose sum is σ = 264775680. Its totient is φ = 192665088.

The previous prime is 228216713. The next prime is 228216757. The reversal of 228216737 is 737612822.

It is not a de Polignac number, because 228216737 - 2¹⁴ = 228200353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228216737.

It is not an unprimeable number, because it can be changed into a prime (228216707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209408 + ... + 210494.

It is an arithmetic number, because the mean of its divisors is an integer number (16548480).

Almost surely, 2^228216737 is an apocalyptic number.

It is an amenable number.

228216737 is a deficient number, since it is larger than the sum of its proper divisors (36558943).

228216737 is a wasteful number, since it uses less digits than its factorization.

228216737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520.

The product of its digits is 56448, while the sum is 38.

The square root of 228216737 is about 15106.8440450016. The cubic root of 228216737 is about 611.1049907841.

The spelling of 228216737 in words is "two hundred twenty-eight million, two hundred sixteen thousand, seven hundred thirty-seven".