3015840 has 96 divisors (see below), whose sum is σ = 9749376. Its totient is φ = 783360.

The previous prime is 3015839. The next prime is 3015841. The reversal of 3015840 is 485103.

It is an interprime number because it is at equal distance from previous prime (3015839) and next prime (3015841).

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3015841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29229 + ... + 29331.

It is an arithmetic number, because the mean of its divisors is an integer number (101556).

Almost surely, 2^3015840 is an apocalyptic number.

3015840 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 3015840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4874688).

3015840 is an abundant number, since it is smaller than the sum of its proper divisors (6733536).

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

3015840 is a wasteful number, since it uses less digits than its factorization.

3015840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 3015840 is about 1736.6174017325. The cubic root of 3015840 is about 144.4783475098.

The spelling of 3015840 in words is "three million, fifteen thousand, eight hundred forty".