228918751 has 4 divisors (see below), whose sum is σ = 228980752. Its totient is φ = 228856752.

The previous prime is 228918743. The next prime is 228918763. The reversal of 228918751 is 157819822.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 228918751 - 2³ = 228918743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228918698 and 228918707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228918791) 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, 25086 + ... + 32971.

It is an arithmetic number, because the mean of its divisors is an integer number (57245188).

Almost surely, 2^228918751 is an apocalyptic number.

228918751 is a deficient number, since it is larger than the sum of its proper divisors (62001).

228918751 is an equidigital number, since it uses as much as digits as its factorization.

228918751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62000.

The product of its digits is 80640, while the sum is 43.

The square root of 228918751 is about 15130.0611697376. The cubic root of 228918751 is about 611.7309529438.

The spelling of 228918751 in words is "two hundred twenty-eight million, nine hundred eighteen thousand, seven hundred fifty-one".