12150000 has 180 divisors, whose sum is σ = 44075304. Its totient is φ = 3240000.

The previous prime is 12149993. The next prime is 12150001. The reversal of 12150000 is 5121.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

12150000 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a nialpdrome in base 15.

It is a zygodrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12150001) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2429998 + ... + 2430002.

Almost surely, 2^12150000 is an apocalyptic number.

12150000 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 12150000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22037652).

12150000 is an abundant number, since it is smaller than the sum of its proper divisors (31925304).

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

12150000 is an frugal number, since it uses more digits than its factorization.

12150000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48 (or 10 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 9.

The square root of 12150000 is about 3485.6850115867. The cubic root of 12150000 is about 229.8928297181.

Adding to 12150000 its reverse (5121), we get a palindrome (12155121).

The spelling of 12150000 in words is "twelve million, one hundred fifty thousand".