228122747 has 4 divisors (see below), whose sum is σ = 228152976. Its totient is φ = 228092520.

The previous prime is 228122731. The next prime is 228122749. The reversal of 228122747 is 747221822.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 228122747 - 2⁴ = 228122731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228122749) 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, 6722 + ... + 22392.

It is an arithmetic number, because the mean of its divisors is an integer number (57038244).

Almost surely, 2^228122747 is an apocalyptic number.

228122747 is a deficient number, since it is larger than the sum of its proper divisors (30229).

228122747 is a wasteful number, since it uses less digits than its factorization.

228122747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30228.

The product of its digits is 25088, while the sum is 35.

The square root of 228122747 is about 15103.7328829664. The cubic root of 228122747 is about 611.0210856832.

The spelling of 228122747 in words is "two hundred twenty-eight million, one hundred twenty-two thousand, seven hundred forty-seven".