3155940 has 72 divisors (see below), whose sum is σ = 9729720. Its totient is φ = 827904.

The previous prime is 3155939. The next prime is 3155959. The reversal of 3155940 is 495513.

3155940 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 665856 + 2490084 = 816^2 + 1578^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15922 + ... + 16118.

It is an arithmetic number, because the mean of its divisors is an integer number (135135).

Almost surely, 2^3155940 is an apocalyptic number.

3155940 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 3155940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4864860).

3155940 is an abundant number, since it is smaller than the sum of its proper divisors (6573780).

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

3155940 is a wasteful number, since it uses less digits than its factorization.

3155940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 296 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 3155940 is about 1776.4965522061. The cubic root of 3155940 is about 146.6818051408.

It can be divided in two parts, 3155 and 940, that added together give a triangular number (4095 = T₉₀).

The spelling of 3155940 in words is "three million, one hundred fifty-five thousand, nine hundred forty".