228140633 has 4 divisors (see below), whose sum is σ = 260732160. Its totient is φ = 195549108.

The previous prime is 228140623. The next prime is 228140639. The reversal of 228140633 is 336041822.

228140633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 228140633 - 2¹² = 228136537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228140596 and 228140605.

It is not an unprimeable number, because it can be changed into a prime (228140639) 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, 16295753 + ... + 16295766.

It is an arithmetic number, because the mean of its divisors is an integer number (65183040).

Almost surely, 2^228140633 is an apocalyptic number.

It is an amenable number.

228140633 is a deficient number, since it is larger than the sum of its proper divisors (32591527).

228140633 is an equidigital number, since it uses as much as digits as its factorization.

228140633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32591526.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 228140633 is about 15104.3249766416. The cubic root of 228140633 is about 611.0370543341.

The spelling of 228140633 in words is "two hundred twenty-eight million, one hundred forty thousand, six hundred thirty-three".