3912500 has 36 divisors (see below), whose sum is σ = 8585388. Its totient is φ = 1560000.

The previous prime is 3912497. The next prime is 3912509. The reversal of 3912500 is 52193.

It can be written as a sum of positive squares in 6 ways, for example, as 3888784 + 23716 = 1972^2 + 154^2 .

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 (3912509) 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 11 ways as a sum of consecutive naturals, for example, 12344 + ... + 12656.

It is an arithmetic number, because the mean of its divisors is an integer number (238483).

Almost surely, 2^3912500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3912500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4292694).

3912500 is an abundant number, since it is smaller than the sum of its proper divisors (4672888).

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

3912500 is an equidigital number, since it uses as much as digits as its factorization.

3912500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 3912500 is about 1978.0040444852. The cubic root of 3912500 is about 157.5740812161.

3912500 divided by its sum of digits (20) gives a triangular number (195625 = T₆₂₅).

Adding to 3912500 its reverse (52193), we get a palindrome (3964693).

The spelling of 3912500 in words is "three million, nine hundred twelve thousand, five hundred".