29139816 has 16 divisors (see below), whose sum is σ = 72849600. Its totient is φ = 9713264.

The previous prime is 29139811. The next prime is 29139823. The reversal of 29139816 is 61893192.

It is not an unprimeable number, because it can be changed into a prime (29139811) 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 3 ways as a sum of consecutive naturals, for example, 607056 + ... + 607103.

It is an arithmetic number, because the mean of its divisors is an integer number (4553100).

Almost surely, 2^29139816 is an apocalyptic number.

It is an amenable number.

29139816 is an abundant number, since it is smaller than the sum of its proper divisors (43709784).

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

29139816 is a wasteful number, since it uses less digits than its factorization.

29139816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214168 (or 1214164 counting only the distinct ones).

The product of its digits is 23328, while the sum is 39.

The square root of 29139816 is about 5398.1307875968. The cubic root of 29139816 is about 307.7246372312.

The spelling of 29139816 in words is "twenty-nine million, one hundred thirty-nine thousand, eight hundred sixteen".