123019888 has 20 divisors (see below), whose sum is σ = 252372240. Its totient is φ = 57891584.

The previous prime is 123019843. The next prime is 123019891. The reversal of 123019888 is 888910321.

It is a self number, because there is not a number n which added to its sum of digits gives 123019888.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225868 + ... + 226411.

It is an arithmetic number, because the mean of its divisors is an integer number (12618612).

Almost surely, 2^123019888 is an apocalyptic number.

It is an amenable number.

123019888 is an abundant number, since it is smaller than the sum of its proper divisors (129352352).

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

123019888 is a wasteful number, since it uses less digits than its factorization.

123019888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452304 (or 452298 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 123019888 is about 11091.4330904532. The cubic root of 123019888 is about 497.3457858930.

The spelling of 123019888 in words is "one hundred twenty-three million, nineteen thousand, eight hundred eighty-eight".