228073791 has 16 divisors (see below), whose sum is σ = 335744640. Its totient is φ = 136559520.

The previous prime is 228073759. The next prime is 228073793. The reversal of 228073791 is 197370822.

228073791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 228073791 - 2⁵ = 228073759 is a prime.

It is a super-2 number, since 2×228073791² = 104035308282223362, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228073793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38896 + ... + 44373.

It is an arithmetic number, because the mean of its divisors is an integer number (20984040).

Almost surely, 2^228073791 is an apocalyptic number.

228073791 is a deficient number, since it is larger than the sum of its proper divisors (107670849).

228073791 is a wasteful number, since it uses less digits than its factorization.

228073791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83366.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 228073791 is about 15102.1121370489. The cubic root of 228073791 is about 610.9773734146.

The spelling of 228073791 in words is "two hundred twenty-eight million, seventy-three thousand, seven hundred ninety-one".