228129922 has 8 divisors (see below), whose sum is σ = 360205200. Its totient is φ = 108061524.

The previous prime is 228129911. The next prime is 228129929. The reversal of 228129922 is 229921822.

228129922 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×228129922² = 104086522623452168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228129929) 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, 3001672 + ... + 3001747.

It is an arithmetic number, because the mean of its divisors is an integer number (45025650).

Almost surely, 2^228129922 is an apocalyptic number.

228129922 is a deficient number, since it is larger than the sum of its proper divisors (132075278).

228129922 is a wasteful number, since it uses less digits than its factorization.

228129922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6003440.

The product of its digits is 20736, while the sum is 37.

The square root of 228129922 is about 15103.9704051617. The cubic root of 228129922 is about 611.0274916355.

The spelling of 228129922 in words is "two hundred twenty-eight million, one hundred twenty-nine thousand, nine hundred twenty-two".