12450000 has 120 divisors (see below), whose sum is σ = 40684896. Its totient is φ = 3280000.

The previous prime is 12449999. The next prime is 12450023. The reversal of 12450000 is 5421.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149959 + ... + 150041.

Almost surely, 2^12450000 is an apocalyptic number.

12450000 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 12450000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20342448).

12450000 is an abundant number, since it is smaller than the sum of its proper divisors (28234896).

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

12450000 is an frugal number, since it uses more digits than its factorization.

12450000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 12450000 is about 3528.4557528755. The cubic root of 12450000 is about 231.7695889201.

Adding to 12450000 its reverse (5421), we get a palindrome (12455421).

The spelling of 12450000 in words is "twelve million, four hundred fifty thousand".