3168720 has 120 divisors (see below), whose sum is σ = 11103456. Its totient is φ = 839808.

The previous prime is 3168719. The next prime is 3168721. The reversal of 3168720 is 278613.

It is an interprime number because it is at equal distance from previous prime (3168719) and next prime (3168721).

It is a tau number, because it is divible by the number of its divisors (120).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3168721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19359 + ... + 19521.

Almost surely, 2^3168720 is an apocalyptic number.

3168720 is a gapful number since it is divisible by the number (30) 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 3168720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5551728).

3168720 is an abundant number, since it is smaller than the sum of its proper divisors (7934736).

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

3168720 is a wasteful number, since it uses less digits than its factorization.

3168720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 3168720 is about 1780.0898853710. The cubic root of 3168720 is about 146.8795347928.

The spelling of 3168720 in words is "three million, one hundred sixty-eight thousand, seven hundred twenty".