3873870 has 192 divisors, whose sum is σ = 13837824. Its totient is φ = 725760.

The previous prime is 3873847. The next prime is 3873871. The reversal of 3873870 is 783783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3873871) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 90069 + ... + 90111.

It is an arithmetic number, because the mean of its divisors is an integer number (72072).

Almost surely, 2^3873870 is an apocalyptic number.

3873870 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3873870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6918912).

3873870 is an abundant number, since it is smaller than the sum of its proper divisors (9963954).

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

3873870 is a wasteful number, since it uses less digits than its factorization.

3873870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 3873870 is about 1968.2149272882. The cubic root of 3873870 is about 157.0537633497.

The spelling of 3873870 in words is "three million, eight hundred seventy-three thousand, eight hundred seventy".