29166021 has 8 divisors (see below), whose sum is σ = 43208960. Its totient is φ = 19443996.

The previous prime is 29166017. The next prime is 29166029. The reversal of 29166021 is 12066192.

It is not a de Polignac number, because 29166021 - 2² = 29166017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1080223 = 29166021 / (2 + 9 + 1 + 6 + 6 + 0 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29166029) 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, 540085 + ... + 540138.

It is an arithmetic number, because the mean of its divisors is an integer number (5401120).

Almost surely, 2^29166021 is an apocalyptic number.

It is an amenable number.

29166021 is a deficient number, since it is larger than the sum of its proper divisors (14042939).

29166021 is a wasteful number, since it uses less digits than its factorization.

29166021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080232 (or 1080226 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 29166021 is about 5400.5574712246. The cubic root of 29166021 is about 307.8168536459.

The spelling of 29166021 in words is "twenty-nine million, one hundred sixty-six thousand, twenty-one".