2783457 has 8 divisors (see below), whose sum is σ = 4123680. Its totient is φ = 1855620.

The previous prime is 2783447. The next prime is 2783477. The reversal of 2783457 is 7543872.

2783457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2783457 - 2¹⁶ = 2717921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2783447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51519 + ... + 51572.

It is an arithmetic number, because the mean of its divisors is an integer number (515460).

2^2783457 is an apocalyptic number.

2783457 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2783457 is a deficient number, since it is larger than the sum of its proper divisors (1340223).

2783457 is a wasteful number, since it uses less digits than its factorization.

2783457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103100 (or 103094 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 2783457 is about 1668.3695633762. The cubic root of 2783457 is about 140.6678464995.

It can be divided in two parts, 2783 and 457, that added together give a triangular number (3240 = T₈₀).

The spelling of 2783457 in words is "two million, seven hundred eighty-three thousand, four hundred fifty-seven".