29091138 has 8 divisors (see below), whose sum is σ = 58182288. Its totient is φ = 9697044.

The previous prime is 29091137. The next prime is 29091149. The reversal of 29091138 is 83119092.

It is a sphenic number, since it is the product of 3 distinct primes.

29091138 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 29091099 and 29091108.

It is not an unprimeable number, because it can be changed into a prime (29091137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2424256 + ... + 2424267.

It is an arithmetic number, because the mean of its divisors is an integer number (7272786).

Almost surely, 2^29091138 is an apocalyptic number.

29091138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

29091138 is a wasteful number, since it uses less digits than its factorization.

29091138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4848528.

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

The square root of 29091138 is about 5393.6201201049. The cubic root of 29091138 is about 307.5531906136.

The spelling of 29091138 in words is "twenty-nine million, ninety-one thousand, one hundred thirty-eight".