123297228 has 42 divisors (see below), whose sum is σ = 323514884. Its totient is φ = 41098104.

The previous prime is 123297191. The next prime is 123297233. The reversal of 123297228 is 822792321.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 123297192 and 123297201.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 18226 + ... + 24057.

Almost surely, 2^123297228 is an apocalyptic number.

123297228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

123297228 is an abundant number, since it is smaller than the sum of its proper divisors (200217656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123297228 is an equidigital number, since it uses as much as digits as its factorization.

123297228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42305 (or 42288 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 123297228 is about 11103.9284940061. The cubic root of 123297228 is about 497.7192495065.

The spelling of 123297228 in words is "one hundred twenty-three million, two hundred ninety-seven thousand, two hundred twenty-eight".