12718458 has 20 divisors (see below), whose sum is σ = 28499130. Its totient is φ = 4239432.

The previous prime is 12718457. The next prime is 12718469. The reversal of 12718458 is 85481721.

It can be written as a sum of positive squares in only one way, i.e., 7935489 + 4782969 = 2817^2 + 2187^2 .

It is not an unprimeable number, because it can be changed into a prime (12718451) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 39093 + ... + 39416.

Almost surely, 2^12718458 is an apocalyptic number.

12718458 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12718458 is an abundant number, since it is smaller than the sum of its proper divisors (15780672).

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

12718458 is an equidigital number, since it uses as much as digits as its factorization.

12718458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78523 (or 78514 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 12718458 is about 3566.2947158080. The cubic root of 12718458 is about 233.4236308110.

The spelling of 12718458 in words is "twelve million, seven hundred eighteen thousand, four hundred fifty-eight".