228377851 has 4 divisors (see below), whose sum is σ = 245945392. Its totient is φ = 210810312.

The previous prime is 228377843. The next prime is 228377857. The reversal of 228377851 is 158773822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 158773822 = 2 ⋅79386911.

It is a cyclic number.

It is not a de Polignac number, because 228377851 - 2³ = 228377843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228377798 and 228377807.

It is not an unprimeable number, because it can be changed into a prime (228377857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8783751 + ... + 8783776.

It is an arithmetic number, because the mean of its divisors is an integer number (61486348).

Almost surely, 2^228377851 is an apocalyptic number.

228377851 is a deficient number, since it is larger than the sum of its proper divisors (17567541).

228377851 is a wasteful number, since it uses less digits than its factorization.

228377851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17567540.

The product of its digits is 188160, while the sum is 43.

The square root of 228377851 is about 15112.1755879159. The cubic root of 228377851 is about 611.2487640681.

The spelling of 228377851 in words is "two hundred twenty-eight million, three hundred seventy-seven thousand, eight hundred fifty-one".