3256749 has 12 divisors (see below), whose sum is σ = 4769596. Its totient is φ = 2140992.

The previous prime is 3256739. The next prime is 3256789. The reversal of 3256749 is 9476523.

It can be written as a sum of positive squares in 2 ways, for example, as 2340900 + 915849 = 1530^2 + 957^2 .

It is not a de Polignac number, because 3256749 - 2⁵ = 3256717 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3256739) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1822 + ... + 3135.

Almost surely, 2^3256749 is an apocalyptic number.

It is an amenable number.

3256749 is a deficient number, since it is larger than the sum of its proper divisors (1512847).

3256749 is a wasteful number, since it uses less digits than its factorization.

3256749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5036 (or 5033 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 3256749 is about 1804.6465027811. The cubic root of 3256749 is about 148.2272652770.

It can be divided in two parts, 3256 and 749, that added together give a triangular number (4005 = T₈₉).

The spelling of 3256749 in words is "three million, two hundred fifty-six thousand, seven hundred forty-nine".