228218546 has 8 divisors (see below), whose sum is σ = 350677404. Its totient is φ = 111326080.

The previous prime is 228218539. The next prime is 228218563. The reversal of 228218546 is 645812822.

It can be written as a sum of positive squares in 2 ways, for example, as 222337921 + 5880625 = 14911^2 + 2425^2 .

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, 1391495 + ... + 1391658.

Almost surely, 2^228218546 is an apocalyptic number.

228218546 is a deficient number, since it is larger than the sum of its proper divisors (122458858).

228218546 is a wasteful number, since it uses less digits than its factorization.

228218546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783196.

The product of its digits is 61440, while the sum is 38.

The square root of 228218546 is about 15106.9039184076. The cubic root of 228218546 is about 611.1066054568.

The spelling of 228218546 in words is "two hundred twenty-eight million, two hundred eighteen thousand, five hundred forty-six".