228665379 has 16 divisors (see below), whose sum is σ = 319486464. Its totient is φ = 145200000.

The previous prime is 228665363. The next prime is 228665389. The reversal of 228665379 is 973566822.

It is not a de Polignac number, because 228665379 - 2⁴ = 228665363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228665329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9754 + ... + 23504.

It is an arithmetic number, because the mean of its divisors is an integer number (19967904).

Almost surely, 2^228665379 is an apocalyptic number.

228665379 is a deficient number, since it is larger than the sum of its proper divisors (90821085).

228665379 is a wasteful number, since it uses less digits than its factorization.

228665379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14018.

The product of its digits is 1088640, while the sum is 48.

The square root of 228665379 is about 15121.6857195221. The cubic root of 228665379 is about 611.5051774761.

The spelling of 228665379 in words is "two hundred twenty-eight million, six hundred sixty-five thousand, three hundred seventy-nine".