3845280 has 48 divisors (see below), whose sum is σ = 12114144. Its totient is φ = 1025280.

The previous prime is 3845279. The next prime is 3845287. The reversal of 3845280 is 825483.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is not an unprimeable number, because it can be changed into a prime (3845287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3526 + ... + 4485.

It is an arithmetic number, because the mean of its divisors is an integer number (252378).

Almost surely, 2^3845280 is an apocalyptic number.

3845280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3845280 is an abundant number, since it is smaller than the sum of its proper divisors (8268864).

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

3845280 is a wasteful number, since it uses less digits than its factorization.

3845280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8029 (or 8021 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 3845280 is about 1960.9385507965. The cubic root of 3845280 is about 156.6664453495. Note that the first 3 decimals are identical.

The spelling of 3845280 in words is "three million, eight hundred forty-five thousand, two hundred eighty".