228551578 has 4 divisors (see below), whose sum is σ = 342827370. Its totient is φ = 114275788.

The previous prime is 228551573. The next prime is 228551593. The reversal of 228551578 is 875155822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 228523689 + 27889 = 15117^2 + 167^2 .

It is not an unprimeable number, because it can be changed into a prime (228551573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57137893 + ... + 57137896.

Almost surely, 2^228551578 is an apocalyptic number.

228551578 is a deficient number, since it is larger than the sum of its proper divisors (114275792).

228551578 is a wasteful number, since it uses less digits than its factorization.

228551578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114275791.

The product of its digits is 224000, while the sum is 43.

The square root of 228551578 is about 15117.9224101726. The cubic root of 228551578 is about 611.4037170676.

The spelling of 228551578 in words is "two hundred twenty-eight million, five hundred fifty-one thousand, five hundred seventy-eight".