2783490 has 64 divisors (see below), whose sum is σ = 7160832. Its totient is φ = 691200.

The previous prime is 2783477. The next prime is 2783497. The reversal of 2783490 is 943872.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2783497) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38094 + ... + 38166.

It is an arithmetic number, because the mean of its divisors is an integer number (111888).

2^2783490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2783490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3580416).

2783490 is an abundant number, since it is smaller than the sum of its proper divisors (4377342).

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

2783490 is a wasteful number, since it uses less digits than its factorization.

2783490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155.

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

The square root of 2783490 is about 1668.3794532420. The cubic root of 2783490 is about 140.6684024054.

The spelling of 2783490 in words is "two million, seven hundred eighty-three thousand, four hundred ninety".