123240288 has 24 divisors (see below), whose sum is σ = 323506008. Its totient is φ = 41080064.

The previous prime is 123240263. The next prime is 123240323. The reversal of 123240288 is 882042321.

It is a tau number, because it is divible by the number of its divisors (24).

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, 641781 + ... + 641972.

It is an arithmetic number, because the mean of its divisors is an integer number (13479417).

Almost surely, 2^123240288 is an apocalyptic number.

It is an amenable number.

123240288 is an abundant number, since it is smaller than the sum of its proper divisors (200265720).

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

123240288 is a wasteful number, since it uses less digits than its factorization.

123240288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283766 (or 1283758 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 123240288 is about 11101.3642404886. The cubic root of 123240288 is about 497.6426203228.

The spelling of 123240288 in words is "one hundred twenty-three million, two hundred forty thousand, two hundred eighty-eight".