228902983 has 4 divisors (see below), whose sum is σ = 229169088. Its totient is φ = 228636880.

The previous prime is 228902957. The next prime is 228902987. The reversal of 228902983 is 389209822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 389209822 = 2 ⋅194604911.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228902983 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 (228902987) 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, 131758 + ... + 133483.

It is an arithmetic number, because the mean of its divisors is an integer number (57292272).

Almost surely, 2^228902983 is an apocalyptic number.

228902983 is a deficient number, since it is larger than the sum of its proper divisors (266105).

228902983 is an equidigital number, since it uses as much as digits as its factorization.

228902983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266104.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 228902983 is about 15129.5400789317. The cubic root of 228902983 is about 611.7169072106.

The spelling of 228902983 in words is "two hundred twenty-eight million, nine hundred two thousand, nine hundred eighty-three".