228108772 has 12 divisors (see below), whose sum is σ = 400676220. Its totient is φ = 113629856.

The previous prime is 228108743. The next prime is 228108773. The reversal of 228108772 is 277801822.

It is a happy number.

228108772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 25160256 + 202948516 = 5016^2 + 14246^2 .

It is a super-2 number, since 2×228108772² = 104067223726695968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228108773) 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, 104923 + ... + 107074.

It is an arithmetic number, because the mean of its divisors is an integer number (33389685).

Almost surely, 2^228108772 is an apocalyptic number.

It is an amenable number.

228108772 is a deficient number, since it is larger than the sum of its proper divisors (172567448).

228108772 is a wasteful number, since it uses less digits than its factorization.

228108772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212270 (or 212268 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 228108772 is about 15103.2702419046. The cubic root of 228108772 is about 611.0086081988.

The spelling of 228108772 in words is "two hundred twenty-eight million, one hundred eight thousand, seven hundred seventy-two".