5781870 has 48 divisors (see below), whose sum is σ = 15921360. Its totient is φ = 1450752.

The previous prime is 5781869. The next prime is 5781889. The reversal of 5781870 is 781875.

5781870 is a `hidden beast` number, since 578 + 1 + 87 + 0 = 666.

It is a congruent number.

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, 360 + ... + 3419.

It is an arithmetic number, because the mean of its divisors is an integer number (331695).

Almost surely, 2^5781870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5781870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7960680).

5781870 is an abundant number, since it is smaller than the sum of its proper divisors (10139490).

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

5781870 is a wasteful number, since it uses less digits than its factorization.

5781870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3809 (or 3806 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 36.

The square root of 5781870 is about 2404.5519333131. The cubic root of 5781870 is about 179.4827744480.

It can be divided in two parts, 5 and 781870, that added together give a triangular number (781875 = T₁₂₅₀).

The spelling of 5781870 in words is "five million, seven hundred eighty-one thousand, eight hundred seventy".