3118720 has 64 divisors (see below), whose sum is σ = 8151840. Its totient is φ = 1131520.

The previous prime is 3118699. The next prime is 3118721. The reversal of 3118720 is 278113.

3118720 = T₁₈₁ + T₁₈₂ + ... + T₂₉₀.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 3118691 and 3118700.

It is not an unprimeable number, because it can be changed into a prime (3118721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6819 + ... + 7261.

Almost surely, 2^3118720 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 3118720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4075920).

3118720 is an abundant number, since it is smaller than the sum of its proper divisors (5033120).

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

3118720 is a wasteful number, since it uses less digits than its factorization.

3118720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 3118720 is about 1765.9898074451. The cubic root of 3118720 is about 146.1028861331.

The spelling of 3118720 in words is "three million, one hundred eighteen thousand, seven hundred twenty".