3117620 has 48 divisors (see below), whose sum is σ = 7354368. Its totient is φ = 1100160.

The previous prime is 3117601. The next prime is 3117623. The reversal of 3117620 is 267113.

3117620 = 143² + 144² + ... + 230².

It is a happy number.

3117620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3117592 and 3117601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3117623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7949 + ... + 8331.

It is an arithmetic number, because the mean of its divisors is an integer number (153216).

Almost surely, 2^3117620 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 3117620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3677184).

3117620 is an abundant number, since it is smaller than the sum of its proper divisors (4236748).

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

3117620 is a wasteful number, since it uses less digits than its factorization.

3117620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 3117620 is about 1765.6783399023. The cubic root of 3117620 is about 146.0857068551.

The spelling of 3117620 in words is "three million, one hundred seventeen thousand, six hundred twenty".