3821880 has 32 divisors (see below), whose sum is σ = 11466000. Its totient is φ = 1019136.

The previous prime is 3821863. The next prime is 3821893. The reversal of 3821880 is 881283.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15805 + ... + 16044.

Almost surely, 2^3821880 is an apocalyptic number.

3821880 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3821880 is an abundant number, since it is smaller than the sum of its proper divisors (7644120).

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

3821880 is a wasteful number, since it uses less digits than its factorization.

3821880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31863 (or 31859 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 3821880 is about 1954.9629152493. The cubic root of 3821880 is about 156.3480067797.

The spelling of 3821880 in words is "three million, eight hundred twenty-one thousand, eight hundred eighty".