29902005 has 72 divisors (see below), whose sum is σ = 61461504. Its totient is φ = 13406400.

The previous prime is 29901983. The next prime is 29902043. The reversal of 29902005 is 50020992.

It is not a de Polignac number, because 29902005 - 2⁶ = 29901941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 29902005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 156460 + ... + 156650.

It is an arithmetic number, because the mean of its divisors is an integer number (853632).

Almost surely, 2^29902005 is an apocalyptic number.

It is an amenable number.

29902005 is an abundant number, since it is smaller than the sum of its proper divisors (31559499).

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

29902005 is a wasteful number, since it uses less digits than its factorization.

29902005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 29902005 is about 5468.2725791606. The cubic root of 29902005 is about 310.3845557123.

Adding to 29902005 its reverse (50020992), we get a palindrome (79922997).

The spelling of 29902005 in words is "twenty-nine million, nine hundred two thousand, five".