12507750 has 128 divisors (see below), whose sum is σ = 37065600. Its totient is φ = 3110400.

The previous prime is 12507721. The next prime is 12507763. The reversal of 12507750 is 5770521.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 114696 + ... + 114804.

It is an arithmetic number, because the mean of its divisors is an integer number (289575).

Almost surely, 2^12507750 is an apocalyptic number.

12507750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12507750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18532800).

12507750 is an abundant number, since it is smaller than the sum of its proper divisors (24557850).

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

12507750 is a wasteful number, since it uses less digits than its factorization.

12507750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 27.

The square root of 12507750 is about 3536.6297516138. The cubic root of 12507750 is about 232.1273948563.

The spelling of 12507750 in words is "twelve million, five hundred seven thousand, seven hundred fifty".