29102281 has 16 divisors (see below), whose sum is σ = 33566400. Its totient is φ = 25005888.

The previous prime is 29102279. The next prime is 29102287. The reversal of 29102281 is 18220192.

It is a cyclic number.

It is not a de Polignac number, because 29102281 - 2¹ = 29102279 is a prime.

It is a super-2 number, since 2×29102281² = 1693885518805922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29102287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13575 + ... + 15571.

It is an arithmetic number, because the mean of its divisors is an integer number (2097900).

Almost surely, 2^29102281 is an apocalyptic number.

It is an amenable number.

29102281 is a deficient number, since it is larger than the sum of its proper divisors (4464119).

29102281 is a wasteful number, since it uses less digits than its factorization.

29102281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 29102281 is about 5394.6530008889. The cubic root of 29102281 is about 307.5924537474.

The spelling of 29102281 in words is "twenty-nine million, one hundred two thousand, two hundred eighty-one".