228403751 has 2 divisors, whose sum is σ = 228403752. Its totient is φ = 228403750.

The previous prime is 228403733. The next prime is 228403759. The reversal of 228403751 is 157304822.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228403751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228403759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114201875 + 114201876.

It is an arithmetic number, because the mean of its divisors is an integer number (114201876).

Almost surely, 2^228403751 is an apocalyptic number.

228403751 is a deficient number, since it is larger than the sum of its proper divisors (1).

228403751 is an equidigital number, since it uses as much as digits as its factorization.

228403751 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 228403751 is about 15113.0324885511. The cubic root of 228403751 is about 611.2718701392.

The spelling of 228403751 in words is "two hundred twenty-eight million, four hundred three thousand, seven hundred fifty-one".