228032705 has 8 divisors (see below), whose sum is σ = 274416552. Its totient is φ = 181907968.

The previous prime is 228032671. The next prime is 228032719. The reversal of 228032705 is 507230822.

It can be written as a sum of positive squares in 4 ways, for example, as 38887696 + 189145009 = 6236^2 + 13753^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 228032705 - 2⁶ = 228032641 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62834 + ... + 66363.

It is an arithmetic number, because the mean of its divisors is an integer number (34302069).

Almost surely, 2^228032705 is an apocalyptic number.

It is an amenable number.

228032705 is a deficient number, since it is larger than the sum of its proper divisors (46383847).

228032705 is a wasteful number, since it uses less digits than its factorization.

228032705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129555.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 228032705 is about 15100.7518024766. The cubic root of 228032705 is about 610.9406833537.

The spelling of 228032705 in words is "two hundred twenty-eight million, thirty-two thousand, seven hundred five".