123533648 has 20 divisors (see below), whose sum is σ = 273539040. Its totient is φ = 52942944.

The previous prime is 123533647. The next prime is 123533653. The reversal of 123533648 is 846335321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123533647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551378 + ... + 551601.

It is an arithmetic number, because the mean of its divisors is an integer number (13676952).

Almost surely, 2^123533648 is an apocalyptic number.

It is an amenable number.

123533648 is an abundant number, since it is smaller than the sum of its proper divisors (150005392).

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

123533648 is a wasteful number, since it uses less digits than its factorization.

123533648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102994 (or 1102988 counting only the distinct ones).

The product of its digits is 51840, while the sum is 35.

The square root of 123533648 is about 11114.5691774355. The cubic root of 123533648 is about 498.0371686693.

Adding to 123533648 its reverse (846335321), we get a palindrome (969868969).

The spelling of 123533648 in words is "one hundred twenty-three million, five hundred thirty-three thousand, six hundred forty-eight".