3845880 has 80 divisors (see below), whose sum is σ = 12937320. Its totient is φ = 1024704.

The previous prime is 3845873. The next prime is 3845887. The reversal of 3845880 is 885483.

It is an interprime number because it is at equal distance from previous prime (3845873) and next prime (3845887).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3845887) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2647 + ... + 3833.

Almost surely, 2^3845880 is an apocalyptic number.

3845880 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 3845880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6468660).

3845880 is an abundant number, since it is smaller than the sum of its proper divisors (9091440).

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

3845880 is a wasteful number, since it uses less digits than its factorization.

3845880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210 (or 1197 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 3845880 is about 1961.0915327949. The cubic root of 3845880 is about 156.6745934322.

The spelling of 3845880 in words is "three million, eight hundred forty-five thousand, eight hundred eighty".