12452540 has 48 divisors (see below), whose sum is σ = 27185760. Its totient is φ = 4788480.

The previous prime is 12452537. The next prime is 12452621. The reversal of 12452540 is 4525421.

It is a happy number.

12452540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71894 + ... + 72066.

It is an arithmetic number, because the mean of its divisors is an integer number (566370).

Almost surely, 2^12452540 is an apocalyptic number.

12452540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12452540 is an abundant number, since it is smaller than the sum of its proper divisors (14733220).

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

12452540 is a wasteful number, since it uses less digits than its factorization.

12452540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 12452540 is about 3528.8156653472. The cubic root of 12452540 is about 231.7853494214.

Adding to 12452540 its reverse (4525421), we get a palindrome (16977961).

The spelling of 12452540 in words is "twelve million, four hundred fifty-two thousand, five hundred forty".