2783904 has 48 divisors (see below), whose sum is σ = 7475328. Its totient is φ = 906752.

The previous prime is 2783887. The next prime is 2783909. The reversal of 2783904 is 4093872.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2783909) 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, 4204 + ... + 4820.

It is an arithmetic number, because the mean of its divisors is an integer number (155736).

2^2783904 is an apocalyptic number.

2783904 is a gapful number since it is divisible by the number (24) 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 2783904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3737664).

2783904 is an abundant number, since it is smaller than the sum of its proper divisors (4691424).

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

2783904 is a wasteful number, since it uses less digits than its factorization.

2783904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677 (or 669 counting only the distinct ones).

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

The square root of 2783904 is about 1668.5035211230. The cubic root of 2783904 is about 140.6753761244.

The spelling of 2783904 in words is "two million, seven hundred eighty-three thousand, nine hundred four".