123488280 has 128 divisors (see below), whose sum is σ = 415800000. Its totient is φ = 32596992.

The previous prime is 123488263. The next prime is 123488291. The reversal of 123488280 is 82884321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117196 + ... + 118244.

Almost surely, 2^123488280 is an apocalyptic number.

123488280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123488280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207900000).

123488280 is an abundant number, since it is smaller than the sum of its proper divisors (292311720).

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

123488280 is a wasteful number, since it uses less digits than its factorization.

123488280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178 (or 1168 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 123488280 is about 11112.5280652064. The cubic root of 123488280 is about 497.9761927943.

The spelling of 123488280 in words is "one hundred twenty-three million, four hundred eighty-eight thousand, two hundred eighty".