29984155 has 16 divisors (see below), whose sum is σ = 36648864. Its totient is φ = 23546880.

The previous prime is 29984153. The next prime is 29984159. The reversal of 29984155 is 55148992.

It is not a de Polignac number, because 29984155 - 2¹ = 29984153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29984153) 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 15 ways as a sum of consecutive naturals, for example, 102189 + ... + 102481.

It is an arithmetic number, because the mean of its divisors is an integer number (2290554).

Almost surely, 2^29984155 is an apocalyptic number.

29984155 is a deficient number, since it is larger than the sum of its proper divisors (6664709).

29984155 is a wasteful number, since it uses less digits than its factorization.

29984155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606.

The product of its digits is 129600, while the sum is 43.

The square root of 29984155 is about 5475.7789400231. The cubic root of 29984155 is about 310.6685364070.

The spelling of 29984155 in words is "twenty-nine million, nine hundred eighty-four thousand, one hundred fifty-five".