29109138 has 16 divisors (see below), whose sum is σ = 58496736. Its totient is φ = 9656640.

The previous prime is 29109107. The next prime is 29109167. The reversal of 29109138 is 83190192.

It is a junction number, because it is equal to n+sod(n) for n = 29109099 and 29109108.

It is an unprimeable number.

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, 10231 + ... + 12762.

It is an arithmetic number, because the mean of its divisors is an integer number (3656046).

Almost surely, 2^29109138 is an apocalyptic number.

29109138 is an abundant number, since it is smaller than the sum of its proper divisors (29387598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29109138 is a wasteful number, since it uses less digits than its factorization.

29109138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23209.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 29109138 is about 5395.2885001638. The cubic root of 29109138 is about 307.6166098817.

The spelling of 29109138 in words is "twenty-nine million, one hundred nine thousand, one hundred thirty-eight".