228333407 has 2 divisors, whose sum is σ = 228333408. Its totient is φ = 228333406.

The previous prime is 228333389. The next prime is 228333419. The reversal of 228333407 is 704333822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228333407 - 2⁸ = 228333151 is a prime.

It is a super-2 number, since 2×228333407² = 104272289504455298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228333467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114166703 + 114166704.

It is an arithmetic number, because the mean of its divisors is an integer number (114166704).

Almost surely, 2^228333407 is an apocalyptic number.

228333407 is a deficient number, since it is larger than the sum of its proper divisors (1).

228333407 is an equidigital number, since it uses as much as digits as its factorization.

228333407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 228333407 is about 15110.7050464232. The cubic root of 228333407 is about 611.2091103358.

The spelling of 228333407 in words is "two hundred twenty-eight million, three hundred thirty-three thousand, four hundred seven".