29972205 has 24 divisors (see below), whose sum is σ = 52615680. Its totient is φ = 15780960.

The previous prime is 29972203. The next prime is 29972209. The reversal of 29972205 is 50227992.

29972205 = T₁₇₅ + T₁₇₆ + ... + T₅₆₉.

It is not a de Polignac number, because 29972205 - 2¹ = 29972203 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 29972205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29972203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 661 + ... + 7770.

It is an arithmetic number, because the mean of its divisors is an integer number (2192320).

Almost surely, 2^29972205 is an apocalyptic number.

It is an amenable number.

29972205 is a deficient number, since it is larger than the sum of its proper divisors (22643475).

29972205 is a wasteful number, since it uses less digits than its factorization.

29972205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8521 (or 8518 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 29972205 is about 5474.6876623238. The cubic root of 29972205 is about 310.6272592467.

The spelling of 29972205 in words is "twenty-nine million, nine hundred seventy-two thousand, two hundred five".