3870000 has 150 divisors (see below), whose sum is σ = 13848692. Its totient is φ = 1008000.

The previous prime is 3869993. The next prime is 3870001. The reversal of 3870000 is 783.

It is a tau number, because it is divible by the number of its divisors (150).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (3870001) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 89979 + ... + 90021.

Almost surely, 2^3870000 is an apocalyptic number.

3870000 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 3870000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6924346).

3870000 is an abundant number, since it is smaller than the sum of its proper divisors (9978692).

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

3870000 is a wasteful number, since it uses less digits than its factorization.

3870000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 3870000 is about 1967.2315572906. The cubic root of 3870000 is about 157.0014469690.

Adding to 3870000 its reverse (783), we get a palindrome (3870783).

The spelling of 3870000 in words is "three million, eight hundred seventy thousand".