3256891 has 8 divisors (see below), whose sum is σ = 3667968. Its totient is φ = 2865000.

The previous prime is 3256889. The next prime is 3256927. The reversal of 3256891 is 1986523.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3256891 - 2¹ = 3256889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3256831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4435 + ... + 5116.

It is an arithmetic number, because the mean of its divisors is an integer number (458496).

Almost surely, 2^3256891 is an apocalyptic number.

3256891 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3256891 is a deficient number, since it is larger than the sum of its proper divisors (411077).

3256891 is a wasteful number, since it uses less digits than its factorization.

3256891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9593.

The product of its digits is 12960, while the sum is 34.

The square root of 3256891 is about 1804.6858452373. The cubic root of 3256891 is about 148.2294195691.

The spelling of 3256891 in words is "three million, two hundred fifty-six thousand, eight hundred ninety-one".