2869440 has 168 divisors, whose sum is σ = 10771632. Its totient is φ = 645120.

The previous prime is 2869429. The next prime is 2869441. The reversal of 2869440 is 449682.

It is a tau number, because it is divible by the number of its divisors (168).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2869441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47010 + ... + 47070.

2^2869440 is an apocalyptic number.

2869440 is a gapful number since it is divisible by the number (20) 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 2869440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5385816).

2869440 is an abundant number, since it is smaller than the sum of its proper divisors (7902192).

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

2869440 is a wasteful number, since it uses less digits than its factorization.

2869440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 2869440 is about 1693.9421477725. The cubic root of 2869440 is about 142.1016266487.

The spelling of 2869440 in words is "two million, eight hundred sixty-nine thousand, four hundred forty".