29105145 has 12 divisors (see below), whose sum is σ = 50448996. Its totient is φ = 15522720.

The previous prime is 29105123. The next prime is 29105149. The reversal of 29105145 is 54150192.

It can be written as a sum of positive squares in 2 ways, for example, as 14907321 + 14197824 = 3861^2 + 3768^2 .

It is not a de Polignac number, because 29105145 - 2⁶ = 29105081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29105149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 323346 + ... + 323435.

It is an arithmetic number, because the mean of its divisors is an integer number (4204083).

Almost surely, 2^29105145 is an apocalyptic number.

It is an amenable number.

29105145 is a deficient number, since it is larger than the sum of its proper divisors (21343851).

29105145 is a wasteful number, since it uses less digits than its factorization.

29105145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646792 (or 646789 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 29105145 is about 5394.9184423863. The cubic root of 29105145 is about 307.6025436311.

The spelling of 29105145 in words is "twenty-nine million, one hundred five thousand, one hundred forty-five".