2881629 has 8 divisors (see below), whose sum is σ = 4269120. Its totient is φ = 1921068.

The previous prime is 2881621. The next prime is 2881639. The reversal of 2881629 is 9261882.

2881629 is a `hidden beast` number, since 28 + 8 + 1 + 629 = 666.

It is not a de Polignac number, because 2881629 - 2³ = 2881621 is a prime.

2881629 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2881593 and 2881602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2881621) 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, 53337 + ... + 53390.

It is an arithmetic number, because the mean of its divisors is an integer number (533640).

2^2881629 is an apocalyptic number.

It is an amenable number.

2881629 is a deficient number, since it is larger than the sum of its proper divisors (1387491).

2881629 is a wasteful number, since it uses less digits than its factorization.

2881629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106736 (or 106730 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 2881629 is about 1697.5361557269. The cubic root of 2881629 is about 142.3025520273.

The spelling of 2881629 in words is "two million, eight hundred eighty-one thousand, six hundred twenty-nine".