2782429 has 4 divisors (see below), whose sum is σ = 2996476. Its totient is φ = 2568384.

The previous prime is 2782421. The next prime is 2782469. The reversal of 2782429 is 9242872.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1505529 + 1276900 = 1227^2 + 1130^2 .

It is not a de Polignac number, because 2782429 - 2³ = 2782421 is a prime.

It is a super-2 number, since 2×2782429² = 15483822280082, which contains 22 as substring.

It is a Duffinian number.

2782429 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2782394 and 2782403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2782421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107004 + ... + 107029.

It is an arithmetic number, because the mean of its divisors is an integer number (749119).

2^2782429 is an apocalyptic number.

It is an amenable number.

2782429 is a deficient number, since it is larger than the sum of its proper divisors (214047).

2782429 is a wasteful number, since it uses less digits than its factorization.

2782429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214046.

The product of its digits is 16128, while the sum is 34.

The square root of 2782429 is about 1668.0614497074. The cubic root of 2782429 is about 140.6505269873.

The spelling of 2782429 in words is "two million, seven hundred eighty-two thousand, four hundred twenty-nine".