1228328333 has 4 divisors (see below), whose sum is σ = 1228666428. Its totient is φ = 1227990240.

The previous prime is 1228328327. The next prime is 1228328341. The reversal of 1228328333 is 3338238221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 221027689 + 1007300644 = 14867^2 + 31738^2 .

It is a cyclic number.

It is not a de Polignac number, because 1228328333 - 2²² = 1224134029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1228328293 and 1228328302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228328383) 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, 163538 + ... + 170883.

It is an arithmetic number, because the mean of its divisors is an integer number (307166607).

Almost surely, 2^1228328333 is an apocalyptic number.

It is an amenable number.

1228328333 is a deficient number, since it is larger than the sum of its proper divisors (338095).

1228328333 is an equidigital number, since it uses as much as digits as its factorization.

1228328333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338094.

The product of its digits is 41472, while the sum is 35.

The square root of 1228328333 is about 35047.5153612920. The cubic root of 1228328333 is about 1070.9556585693.

The spelling of 1228328333 in words is "one billion, two hundred twenty-eight million, three hundred twenty-eight thousand, three hundred thirty-three".