228973577 has 4 divisors (see below), whose sum is σ = 261684096. Its totient is φ = 196263060.

The previous prime is 228973571. The next prime is 228973601. The reversal of 228973577 is 775379822.

228973577 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 228973577 - 2¹⁸ = 228711433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228973571) 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, 16355249 + ... + 16355262.

It is an arithmetic number, because the mean of its divisors is an integer number (65421024).

Almost surely, 2^228973577 is an apocalyptic number.

It is an amenable number.

228973577 is a deficient number, since it is larger than the sum of its proper divisors (32710519).

228973577 is an equidigital number, since it uses as much as digits as its factorization.

228973577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32710518.

The product of its digits is 1481760, while the sum is 50.

The square root of 228973577 is about 15131.8728847423. The cubic root of 228973577 is about 611.7797855303.

The spelling of 228973577 in words is "two hundred twenty-eight million, nine hundred seventy-three thousand, five hundred seventy-seven".