123358728 has 32 divisors (see below), whose sum is σ = 308671200. Its totient is φ = 41083008.

The previous prime is 123358727. The next prime is 123358751. The reversal of 123358728 is 827853321.

It is not an unprimeable number, because it can be changed into a prime (123358727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46543 + ... + 49121.

It is an arithmetic number, because the mean of its divisors is an integer number (9645975).

Almost surely, 2^123358728 is an apocalyptic number.

It is an amenable number.

123358728 is an abundant number, since it is smaller than the sum of its proper divisors (185312472).

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

123358728 is a wasteful number, since it uses less digits than its factorization.

123358728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4581 (or 4577 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 123358728 is about 11106.6974389330. The cubic root of 123358728 is about 497.8019889874.

The spelling of 123358728 in words is "one hundred twenty-three million, three hundred fifty-eight thousand, seven hundred twenty-eight".