2568429 has 20 divisors (see below), whose sum is σ = 3945084. Its totient is φ = 1664064.

The previous prime is 2568427. The next prime is 2568431. The reversal of 2568429 is 9248652.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2568427) and next prime (2568431).

It can be written as a sum of positive squares in 2 ways, for example, as 2340900 + 227529 = 1530^2 + 477^2 .

It is not a de Polignac number, because 2568429 - 2¹ = 2568427 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2568393 and 2568402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2568427) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2569 + ... + 3425.

2^2568429 is an apocalyptic number.

2568429 is the 857-th nonagonal number.

It is an amenable number.

2568429 is a deficient number, since it is larger than the sum of its proper divisors (1376655).

2568429 is an equidigital number, since it uses as much as digits as its factorization.

2568429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906 (or 897 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 2568429 is about 1602.6318978480. The cubic root of 2568429 is about 136.9480507035.

The spelling of 2568429 in words is "two million, five hundred sixty-eight thousand, four hundred twenty-nine".