102878228 has 12 divisors (see below), whose sum is σ = 181032852. Its totient is φ = 51154560.

The previous prime is 102878227. The next prime is 102878257. The reversal of 102878228 is 822878201.

It can be written as a sum of positive squares in 2 ways, for example, as 10679824 + 92198404 = 3268^2 + 9602^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102878191 and 102878200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102878221) 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, 70325 + ... + 71772.

It is an arithmetic number, because the mean of its divisors is an integer number (15086071).

Almost surely, 2^102878228 is an apocalyptic number.

It is an amenable number.

102878228 is a deficient number, since it is larger than the sum of its proper divisors (78154624).

102878228 is a wasteful number, since it uses less digits than its factorization.

102878228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142282 (or 142280 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 102878228 is about 10142.8905150356. The cubic root of 102878228 is about 468.5700130796.

The spelling of 102878228 in words is "one hundred two million, eight hundred seventy-eight thousand, two hundred twenty-eight".