22041729 has 24 divisors (see below), whose sum is σ = 33939360. Its totient is φ = 13744512.

The previous prime is 22041709. The next prime is 22041743. The reversal of 22041729 is 92714022.

22041729 is a `hidden beast` number, since 220 + 417 + 29 = 666.

It is not a de Polignac number, because 22041729 - 2⁵ = 22041697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22041709) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13417 + ... + 14969.

It is an arithmetic number, because the mean of its divisors is an integer number (1414140).

Almost surely, 2^22041729 is an apocalyptic number.

It is an amenable number.

22041729 is a deficient number, since it is larger than the sum of its proper divisors (11897631).

22041729 is a wasteful number, since it uses less digits than its factorization.

22041729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661 (or 1658 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 22041729 is about 4694.8619788019. The cubic root of 22041729 is about 280.3809822314.

The spelling of 22041729 in words is "twenty-two million, forty-one thousand, seven hundred twenty-nine".