2793840 has 80 divisors (see below), whose sum is σ = 9904128. Its totient is φ = 638208.

The previous prime is 2793823. The next prime is 2793853. The reversal of 2793840 is 483972.

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 849 + ... + 2511.

2^2793840 is an apocalyptic number.

2793840 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 2793840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4952064).

2793840 is an abundant number, since it is smaller than the sum of its proper divisors (7110288).

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

2793840 is a wasteful number, since it uses less digits than its factorization.

2793840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686 (or 1680 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 2793840 is about 1671.4783875360. The cubic root of 2793840 is about 140.8425383695.

The spelling of 2793840 in words is "two million, seven hundred ninety-three thousand, eight hundred forty".