29086681 has 8 divisors (see below), whose sum is σ = 32404680. Its totient is φ = 25923072.

The previous prime is 29086667. The next prime is 29086693. The reversal of 29086681 is 18668092.

It can be written as a sum of positive squares in 4 ways, for example, as 3168400 + 25918281 = 1780^2 + 5091^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 29086681 - 2⁷ = 29086553 is a prime.

It is a super-2 number, since 2×29086681² = 1692070023191522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29086601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38200 + ... + 38953.

It is an arithmetic number, because the mean of its divisors is an integer number (4050585).

Almost surely, 2^29086681 is an apocalyptic number.

It is an amenable number.

29086681 is a deficient number, since it is larger than the sum of its proper divisors (3317999).

29086681 is a wasteful number, since it uses less digits than its factorization.

29086681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77195.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 29086681 is about 5393.2069309456. The cubic root of 29086681 is about 307.5374832576.

The spelling of 29086681 in words is "twenty-nine million, eighty-six thousand, six hundred eighty-one".