123625280 has 28 divisors (see below), whose sum is σ = 294383460. Its totient is φ = 49449984.

The previous prime is 123625273. The next prime is 123625351. The reversal of 123625280 is 82526321.

It can be written as a sum of positive squares in 2 ways, for example, as 29767936 + 93857344 = 5456^2 + 9688^2 .

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, 192845 + ... + 193484.

It is an arithmetic number, because the mean of its divisors is an integer number (10513695).

Almost surely, 2^123625280 is an apocalyptic number.

123625280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123625280 is an abundant number, since it is smaller than the sum of its proper divisors (170758180).

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

123625280 is an equidigital number, since it uses as much as digits as its factorization.

123625280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386346 (or 386336 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 123625280 is about 11118.6905703864. The cubic root of 123625280 is about 498.1602791567.

The spelling of 123625280 in words is "one hundred twenty-three million, six hundred twenty-five thousand, two hundred eighty".