228787657634 has 8 divisors (see below), whose sum is σ = 344020562220. Its totient is φ = 114114136896.

The previous prime is 228787657607. The next prime is 228787657663. The reversal of 228787657634 is 436756787822.

228787657634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 224074423225 + 4713234409 = 473365^2 + 68653^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139844939 + ... + 139846574.

Almost surely, 2^228787657634 is an apocalyptic number.

228787657634 is a deficient number, since it is larger than the sum of its proper divisors (115232904586).

228787657634 is a wasteful number, since it uses less digits than its factorization.

228787657634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279691924.

The product of its digits is 189665280, while the sum is 65.

The spelling of 228787657634 in words is "two hundred twenty-eight billion, seven hundred eighty-seven million, six hundred fifty-seven thousand, six hundred thirty-four".