12750000 has 140 divisors (see below), whose sum is σ = 43593192. Its totient is φ = 3200000.

The previous prime is 12749953. The next prime is 12750011. The reversal of 12750000 is 5721.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 749992 + ... + 750008.

Almost surely, 2^12750000 is an apocalyptic number.

12750000 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 12750000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21796596).

12750000 is an abundant number, since it is smaller than the sum of its proper divisors (30843192).

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

12750000 is an frugal number, since it uses more digits than its factorization.

12750000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58 (or 27 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 15.

The square root of 12750000 is about 3570.7142142714. The cubic root of 12750000 is about 233.6164364178.

Adding to 12750000 its reverse (5721), we get a palindrome (12755721).

It can be divided in two parts, 12 and 750000, that multiplied together give a square (9000000 = 3000²).

The spelling of 12750000 in words is "twelve million, seven hundred fifty thousand".