3261890 has 8 divisors (see below), whose sum is σ = 5871420. Its totient is φ = 1304752.

The previous prime is 3261889. The next prime is 3261899. The reversal of 3261890 is 981623.

It can be written as a sum of positive squares in 2 ways, for example, as 2866249 + 395641 = 1693^2 + 629^2 .

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

It is not an unprimeable number, because it can be changed into a prime (3261899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163085 + ... + 163104.

Almost surely, 2^3261890 is an apocalyptic number.

3261890 is a deficient number, since it is larger than the sum of its proper divisors (2609530).

3261890 is a wasteful number, since it uses less digits than its factorization.

3261890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326196.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 3261890 is about 1806.0703197827. The cubic root of 3261890 is about 148.3052198821.

The spelling of 3261890 in words is "three million, two hundred sixty-one thousand, eight hundred ninety".