2891332 has 6 divisors (see below), whose sum is σ = 5059838. Its totient is φ = 1445664.

The previous prime is 2891323. The next prime is 2891341. The reversal of 2891332 is 2331982.

It is an interprime number because it is at equal distance from previous prime (2891323) and next prime (2891341).

It can be written as a sum of positive squares in only one way, i.e., 2742336 + 148996 = 1656^2 + 386^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2891332.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361413 + ... + 361420.

2^2891332 is an apocalyptic number.

It is an amenable number.

2891332 is a deficient number, since it is larger than the sum of its proper divisors (2168506).

2891332 is a wasteful number, since it uses less digits than its factorization.

2891332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722837 (or 722835 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

The square root of 2891332 is about 1700.3917195752. The cubic root of 2891332 is about 142.4620931284.

It can be divided in two parts, 2891 and 332, that added together give a palindrome (3223).

The spelling of 2891332 in words is "two million, eight hundred ninety-one thousand, three hundred thirty-two".