123830812 has 24 divisors (see below), whose sum is σ = 256203360. Its totient is φ = 51240000.

The previous prime is 123830803. The next prime is 123830813. The reversal of 123830812 is 218038321.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123830813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75439 + ... + 77062.

It is an arithmetic number, because the mean of its divisors is an integer number (10675140).

Almost surely, 2^123830812 is an apocalyptic number.

It is an amenable number.

123830812 is an abundant number, since it is smaller than the sum of its proper divisors (132372548).

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

123830812 is a wasteful number, since it uses less digits than its factorization.

123830812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152541 (or 152539 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 123830812 is about 11127.9293671374. The cubic root of 123830812 is about 498.4361968048.

The spelling of 123830812 in words is "one hundred twenty-three million, eight hundred thirty thousand, eight hundred twelve".