228651099 has 8 divisors (see below), whose sum is σ = 311354880. Its totient is φ = 149190696.

The previous prime is 228651097. The next prime is 228651113. The reversal of 228651099 is 990156822.

228651099 is nontrivially palindromic in base 2.

228651099 is digitally balanced in base 2, because in such base 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 not a de Polignac number, because 228651099 - 2¹ = 228651097 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 228651099.

It is not an unprimeable number, because it can be changed into a prime (228651091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 810679 + ... + 810960.

It is an arithmetic number, because the mean of its divisors is an integer number (38919360).

Almost surely, 2^228651099 is an apocalyptic number.

228651099 is a deficient number, since it is larger than the sum of its proper divisors (82703781).

228651099 is a wasteful number, since it uses less digits than its factorization.

228651099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621689.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 228651099 is about 15121.2135425699. The cubic root of 228651099 is about 611.4924478479.

The spelling of 228651099 in words is "two hundred twenty-eight million, six hundred fifty-one thousand, ninety-nine".