123878736 has 120 divisors (see below), whose sum is σ = 366065856. Its totient is φ = 39029760.

The previous prime is 123878723. The next prime is 123878747. The reversal of 123878736 is 637878321.

It is a junction number, because it is equal to n+sod(n) for n = 123878691 and 123878700.

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 23 ways as a sum of consecutive naturals, for example, 374091 + ... + 374421.

Almost surely, 2^123878736 is an apocalyptic number.

123878736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123878736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183032928).

123878736 is an abundant number, since it is smaller than the sum of its proper divisors (242187120).

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

123878736 is a wasteful number, since it uses less digits than its factorization.

123878736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481 (or 472 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 123878736 is about 11130.0824794788. The cubic root of 123878736 is about 498.5004887610.

The spelling of 123878736 in words is "one hundred twenty-three million, eight hundred seventy-eight thousand, seven hundred thirty-six".