12258540 has 240 divisors, whose sum is σ = 46835712. Its totient is φ = 2623104.

The previous prime is 12258511. The next prime is 12258551. The reversal of 12258540 is 4585221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 260797 + ... + 260843.

Almost surely, 2^12258540 is an apocalyptic number.

12258540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12258540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23417856).

12258540 is an abundant number, since it is smaller than the sum of its proper divisors (34577172).

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

12258540 is a wasteful number, since it uses less digits than its factorization.

12258540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 12258540 is about 3501.2197874455. The cubic root of 12258540 is about 230.5753710382.

The spelling of 12258540 in words is "twelve million, two hundred fifty-eight thousand, five hundred forty".