2881626 has 16 divisors (see below), whose sum is σ = 6287328. Its totient is φ = 873200.

The previous prime is 2881621. The next prime is 2881639. The reversal of 2881626 is 6261882.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2881621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21765 + ... + 21896.

It is an arithmetic number, because the mean of its divisors is an integer number (392958).

2^2881626 is an apocalyptic number.

2881626 is an abundant number, since it is smaller than the sum of its proper divisors (3405702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2881626 is a wasteful number, since it uses less digits than its factorization.

2881626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43677.

The product of its digits is 9216, while the sum is 33.

The square root of 2881626 is about 1697.5352720930. The cubic root of 2881626 is about 142.3025026446.

The spelling of 2881626 in words is "two million, eight hundred eighty-one thousand, six hundred twenty-six".