29808513 has 24 divisors (see below), whose sum is σ = 51372960. Its totient is φ = 17032680.

The previous prime is 29808479. The next prime is 29808521. The reversal of 29808513 is 31580892.

It is not a de Polignac number, because 29808513 - 2⁸ = 29808257 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (29808533) 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 23 ways as a sum of consecutive naturals, for example, 9943 + ... + 12588.

It is an arithmetic number, because the mean of its divisors is an integer number (2140540).

Almost surely, 2^29808513 is an apocalyptic number.

It is an amenable number.

29808513 is a deficient number, since it is larger than the sum of its proper divisors (21564447).

29808513 is a wasteful number, since it uses less digits than its factorization.

29808513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22554 (or 22541 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 29808513 is about 5459.7173003737. The cubic root of 29808513 is about 310.0607338515.

The spelling of 29808513 in words is "twenty-nine million, eight hundred eight thousand, five hundred thirteen".