3857880 has 64 divisors (see below), whose sum is σ = 12468960. Its totient is φ = 949248.

The previous prime is 3857873. The next prime is 3857891. The reversal of 3857880 is 887583.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324 + ... + 2796.

Almost surely, 2^3857880 is an apocalyptic number.

3857880 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 3857880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6234480).

3857880 is an abundant number, since it is smaller than the sum of its proper divisors (8611080).

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

3857880 is a wasteful number, since it uses less digits than its factorization.

3857880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500 (or 2496 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 3857880 is about 1964.1486705441. The cubic root of 3857880 is about 156.8373774215.

The spelling of 3857880 in words is "three million, eight hundred fifty-seven thousand, eight hundred eighty".