12945258 has 40 divisors (see below), whose sum is σ = 29729700. Its totient is φ = 4207680.

The previous prime is 12945253. The next prime is 12945263. The reversal of 12945258 is 85254921.

12945258 is a `hidden beast` number, since 129 + 4 + 525 + 8 = 666.

12945258 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12945253) and next prime (12945263).

It can be written as a sum of positive squares in 2 ways, for example, as 12766329 + 178929 = 3573^2 + 423^2 .

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12945253) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5668 + ... + 7616.

Almost surely, 2^12945258 is an apocalyptic number.

12945258 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12945258, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14864850).

12945258 is an abundant number, since it is smaller than the sum of its proper divisors (16784442).

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

12945258 is a wasteful number, since it uses less digits than its factorization.

12945258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004 (or 1995 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 12945258 is about 3597.9519174108. The cubic root of 12945258 is about 234.8029614401.

It can be divided in two parts, 12945 and 258, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 12945258 in words is "twelve million, nine hundred forty-five thousand, two hundred fifty-eight".