3881970 has 24 divisors (see below), whose sum is σ = 10093356. Its totient is φ = 1035168.

The previous prime is 3881959. The next prime is 3881987. The reversal of 3881970 is 791883.

It can be written as a sum of positive squares in 2 ways, for example, as 3697929 + 184041 = 1923^2 + 429^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21477 + ... + 21656.

Almost surely, 2^3881970 is an apocalyptic number.

3881970 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3881970 is an abundant number, since it is smaller than the sum of its proper divisors (6211386).

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

3881970 is a wasteful number, since it uses less digits than its factorization.

3881970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43146 (or 43143 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 3881970 is about 1970.2715548878. The cubic root of 3881970 is about 157.1631500751.

It can be divided in two parts, 3881 and 970, that added together give a triangular number (4851 = T₉₈).

The spelling of 3881970 in words is "three million, eight hundred eighty-one thousand, nine hundred seventy".