228790867 has 4 divisors (see below), whose sum is σ = 238738320. Its totient is φ = 218843416.

The previous prime is 228790853. The next prime is 228790901. The reversal of 228790867 is 768097822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 768097822 = 2 ⋅384048911.

It is a cyclic number.

It is not a de Polignac number, because 228790867 - 2¹⁵ = 228758099 is a prime.

It is a super-2 number, since 2×228790867² = 104690521645223378, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 228790867.

It is not an unprimeable number, because it can be changed into a prime (228790817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4973692 + ... + 4973737.

It is an arithmetic number, because the mean of its divisors is an integer number (59684580).

Almost surely, 2^228790867 is an apocalyptic number.

228790867 is a deficient number, since it is larger than the sum of its proper divisors (9947453).

228790867 is an equidigital number, since it uses as much as digits as its factorization.

228790867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9947452.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 228790867 is about 15125.8344232641. The cubic root of 228790867 is about 611.6170185267.

The spelling of 228790867 in words is "two hundred twenty-eight million, seven hundred ninety thousand, eight hundred sixty-seven".