12453500 has 24 divisors (see below), whose sum is σ = 27199536. Its totient is φ = 4981200.

The previous prime is 12453479. The next prime is 12453509. The reversal of 12453500 is 535421.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12453509) 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 7 ways as a sum of consecutive naturals, for example, 11954 + ... + 12953.

It is an arithmetic number, because the mean of its divisors is an integer number (1133314).

Almost surely, 2^12453500 is an apocalyptic number.

12453500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12453500 is an abundant number, since it is smaller than the sum of its proper divisors (14746036).

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

12453500 is a wasteful number, since it uses less digits than its factorization.

12453500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24926 (or 24914 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 12453500 is about 3528.9516856993. The cubic root of 12453500 is about 231.7913055883.

Adding to 12453500 its reverse (535421), we get a palindrome (12988921).

The spelling of 12453500 in words is "twelve million, four hundred fifty-three thousand, five hundred".