123226398 has 12 divisors (see below), whose sum is σ = 266990568. Its totient is φ = 41075460.

The previous prime is 123226379. The next prime is 123226403. The reversal of 123226398 is 893622321.

123226398 is a `hidden beast` number, since 12 + 3 + 2 + 2 + 639 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3422938 + ... + 3422973.

It is an arithmetic number, because the mean of its divisors is an integer number (22249214).

Almost surely, 2^123226398 is an apocalyptic number.

123226398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

123226398 is an abundant number, since it is smaller than the sum of its proper divisors (143764170).

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

123226398 is a wasteful number, since it uses less digits than its factorization.

123226398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6845919 (or 6845916 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 123226398 is about 11100.7386240736. The cubic root of 123226398 is about 497.6239237428.

The spelling of 123226398 in words is "one hundred twenty-three million, two hundred twenty-six thousand, three hundred ninety-eight".