29970681 has 8 divisors (see below), whose sum is σ = 43034880. Its totient is φ = 18443472.

The previous prime is 29970673. The next prime is 29970683. The reversal of 29970681 is 18607992.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 29970681 - 2³ = 29970673 is a prime.

It is a super-2 number, since 2×29970681² = 1796483439207522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (29970683) 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 7 ways as a sum of consecutive naturals, for example, 384201 + ... + 384278.

It is an arithmetic number, because the mean of its divisors is an integer number (5379360).

Almost surely, 2^29970681 is an apocalyptic number.

It is an amenable number.

29970681 is a deficient number, since it is larger than the sum of its proper divisors (13064199).

29970681 is a wasteful number, since it uses less digits than its factorization.

29970681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768495.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 29970681 is about 5474.5484745319. The cubic root of 29970681 is about 310.6219943247.

The spelling of 29970681 in words is "twenty-nine million, nine hundred seventy thousand, six hundred eighty-one".