3125620 has 48 divisors (see below), whose sum is σ = 7212240. Its totient is φ = 1132544.

The previous prime is 3125611. The next prime is 3125651. The reversal of 3125620 is 265213.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 104976 + 3020644 = 324^2 + 1738^2 .

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9702 + ... + 10018.

It is an arithmetic number, because the mean of its divisors is an integer number (150255).

Almost surely, 2^3125620 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 3125620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3606120).

3125620 is an abundant number, since it is smaller than the sum of its proper divisors (4086620).

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

3125620 is a wasteful number, since it uses less digits than its factorization.

3125620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 3125620 is about 1767.9423067510. The cubic root of 3125620 is about 146.2105550233.

It can be divided in two parts, 31 and 25620, that added together give a triangular number (25651 = T₂₂₆).

The spelling of 3125620 in words is "three million, one hundred twenty-five thousand, six hundred twenty".