123528715 has 12 divisors (see below), whose sum is σ = 157468896. Its totient is φ = 93008768.

The previous prime is 123528697. The next prime is 123528751. The reversal of 123528715 is 517825321.

It is not a de Polignac number, because 123528715 - 2⁵ = 123528683 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41299 + ... + 44188.

It is an arithmetic number, because the mean of its divisors is an integer number (13122408).

Almost surely, 2^123528715 is an apocalyptic number.

123528715 is a deficient number, since it is larger than the sum of its proper divisors (33940181).

123528715 is an equidigital number, since it uses as much as digits as its factorization.

123528715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85526 (or 85509 counting only the distinct ones).

The product of its digits is 16800, while the sum is 34.

The square root of 123528715 is about 11114.3472592861. The cubic root of 123528715 is about 498.0305393012.

The spelling of 123528715 in words is "one hundred twenty-three million, five hundred twenty-eight thousand, seven hundred fifteen".