29872213 has 32 divisors (see below), whose sum is σ = 38016000. Its totient is φ = 23369472.

The previous prime is 29872177. The next prime is 29872223. The reversal of 29872213 is 31227892.

It is a de Polignac number, because none of the positive numbers 2^k-29872213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29872223) 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 31 ways as a sum of consecutive naturals, for example, 274003 + ... + 274111.

It is an arithmetic number, because the mean of its divisors is an integer number (1188000).

Almost surely, 2^29872213 is an apocalyptic number.

It is an amenable number.

29872213 is a deficient number, since it is larger than the sum of its proper divisors (8143787).

29872213 is a wasteful number, since it uses less digits than its factorization.

29872213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 180 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 29872213 is about 5465.5478224968. The cubic root of 29872213 is about 310.2814405603.

The spelling of 29872213 in words is "twenty-nine million, eight hundred seventy-two thousand, two hundred thirteen".