228354280687 has 4 divisors (see below), whose sum is σ = 245919994600. Its totient is φ = 210788566776.

The previous prime is 228354280657. The next prime is 228354280703. The reversal of 228354280687 is 786082453822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 786082453822 = 2 ⋅393041226911.

It is a cyclic number.

It is not a de Polignac number, because 228354280687 - 2¹⁹ = 228353756399 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 (228354280657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8782856937 + ... + 8782856962.

It is an arithmetic number, because the mean of its divisors is an integer number (61479998650).

Almost surely, 2^228354280687 is an apocalyptic number.

228354280687 is a deficient number, since it is larger than the sum of its proper divisors (17565713913).

228354280687 is a wasteful number, since it uses less digits than its factorization.

228354280687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17565713912.

The product of its (nonzero) digits is 10321920, while the sum is 55.

The spelling of 228354280687 in words is "two hundred twenty-eight billion, three hundred fifty-four million, two hundred eighty thousand, six hundred eighty-seven".