228974681 has 16 divisors (see below), whose sum is σ = 264479040. Its totient is φ = 196447680.

The previous prime is 228974677. The next prime is 228974689. The reversal of 228974681 is 186479822.

It is a happy number.

228974681 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 228974681 - 2² = 228974677 is a prime.

It is a super-2 number, since 2×228974681² = 104858809078103522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228974689) 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, 4346 + ... + 21836.

It is an arithmetic number, because the mean of its divisors is an integer number (16529940).

Almost surely, 2^228974681 is an apocalyptic number.

It is an amenable number.

228974681 is a deficient number, since it is larger than the sum of its proper divisors (35504359).

228974681 is a wasteful number, since it uses less digits than its factorization.

228974681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17576.

The product of its digits is 387072, while the sum is 47.

The square root of 228974681 is about 15131.9093639897. The cubic root of 228974681 is about 611.7807687642.

The spelling of 228974681 in words is "two hundred twenty-eight million, nine hundred seventy-four thousand, six hundred eighty-one".