29131893 has 40 divisors (see below), whose sum is σ = 50181120. Its totient is φ = 16498080.

The previous prime is 29131873. The next prime is 29131903. The reversal of 29131893 is 39813192.

It is not a de Polignac number, because 29131893 - 2⁸ = 29131637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29131873) 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 39 ways as a sum of consecutive naturals, for example, 108163 + ... + 108431.

It is an arithmetic number, because the mean of its divisors is an integer number (1254528).

Almost surely, 2^29131893 is an apocalyptic number.

It is an amenable number.

29131893 is a deficient number, since it is larger than the sum of its proper divisors (21049227).

29131893 is a wasteful number, since it uses less digits than its factorization.

29131893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 470 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 29131893 is about 5397.3968725674. The cubic root of 29131893 is about 307.6967450017.

It can be divided in two parts, 2913189 and 3, that added together give a palindrome (2913192).

The spelling of 29131893 in words is "twenty-nine million, one hundred thirty-one thousand, eight hundred ninety-three".