123288646 has 16 divisors (see below), whose sum is σ = 200433744. Its totient is φ = 56538144.

The previous prime is 123288637. The next prime is 123288647. The reversal of 123288646 is 646882321.

It is a junction number, because it is equal to n+sod(n) for n = 123288599 and 123288608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123288647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11020 + ... + 19183.

It is an arithmetic number, because the mean of its divisors is an integer number (12527109).

Almost surely, 2^123288646 is an apocalyptic number.

123288646 is a deficient number, since it is larger than the sum of its proper divisors (77145098).

123288646 is a wasteful number, since it uses less digits than its factorization.

123288646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30375.

The product of its digits is 110592, while the sum is 40.

The square root of 123288646 is about 11103.5420474730. The cubic root of 123288646 is about 497.7077014617.

The spelling of 123288646 in words is "one hundred twenty-three million, two hundred eighty-eight thousand, six hundred forty-six".