228515746 has 4 divisors (see below), whose sum is σ = 342773622. Its totient is φ = 114257872.

The previous prime is 228515723. The next prime is 228515747. The reversal of 228515746 is 647515822.

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., 134212225 + 94303521 = 11585^2 + 9711^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 228515699 and 228515708.

It is not an unprimeable number, because it can be changed into a prime (228515747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57128935 + ... + 57128938.

Almost surely, 2^228515746 is an apocalyptic number.

228515746 is a deficient number, since it is larger than the sum of its proper divisors (114257876).

228515746 is a wasteful number, since it uses less digits than its factorization.

228515746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114257875.

The product of its digits is 134400, while the sum is 40.

The square root of 228515746 is about 15116.7372802467. The cubic root of 228515746 is about 611.3717637215.

The spelling of 228515746 in words is "two hundred twenty-eight million, five hundred fifteen thousand, seven hundred forty-six".