12354540 has 48 divisors (see below), whose sum is σ = 37739520. Its totient is φ = 2994880.

The previous prime is 12354539. The next prime is 12354547. The reversal of 12354540 is 4545321.

It is a super-2 number, since 2×12354540² = 305269317223200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12354540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12354547) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 8700 + ... + 10019.

It is an arithmetic number, because the mean of its divisors is an integer number (786240).

Almost surely, 2^12354540 is an apocalyptic number.

12354540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12354540 is an abundant number, since it is smaller than the sum of its proper divisors (25384980).

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

12354540 is a wasteful number, since it uses less digits than its factorization.

12354540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18742 (or 18740 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 12354540 is about 3514.9025591046. The cubic root of 12354540 is about 231.1757063510.

Adding to 12354540 its reverse (4545321), we get a palindrome (16899861).

It can be divided in two parts, 1235 and 4540, that added together give a palindrome (5775).

The spelling of 12354540 in words is "twelve million, three hundred fifty-four thousand, five hundred forty".