123238480 has 20 divisors (see below), whose sum is σ = 286529652. Its totient is φ = 49295360.

The previous prime is 123238477. The next prime is 123238481. The reversal of 123238480 is 84832321.

It can be written as a sum of positive squares in 2 ways, for example, as 96983104 + 26255376 = 9848^2 + 5124^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123238481) 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, 770161 + ... + 770320.

Almost surely, 2^123238480 is an apocalyptic number.

123238480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123238480 is an abundant number, since it is smaller than the sum of its proper divisors (163291172).

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

123238480 is a wasteful number, since it uses less digits than its factorization.

123238480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540494 (or 1540488 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 123238480 is about 11101.2828087568. The cubic root of 123238480 is about 497.6401867510.

The spelling of 123238480 in words is "one hundred twenty-three million, two hundred thirty-eight thousand, four hundred eighty".