123641828 has 6 divisors (see below), whose sum is σ = 216373206. Its totient is φ = 61820912.

The previous prime is 123641789. The next prime is 123641893. The reversal of 123641828 is 828146321.

It can be written as a sum of positive squares in only one way, i.e., 103999204 + 19642624 = 10198^2 + 4432^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15455225 + ... + 15455232.

It is an arithmetic number, because the mean of its divisors is an integer number (36062201).

Almost surely, 2^123641828 is an apocalyptic number.

It is an amenable number.

123641828 is a deficient number, since it is larger than the sum of its proper divisors (92731378).

123641828 is a wasteful number, since it uses less digits than its factorization.

123641828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30910461 (or 30910459 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The square root of 123641828 is about 11119.4346978612. The cubic root of 123641828 is about 498.1825054319.

The spelling of 123641828 in words is "one hundred twenty-three million, six hundred forty-one thousand, eight hundred twenty-eight".