29999868 has 12 divisors (see below), whose sum is σ = 69999720. Its totient is φ = 9999952.

The previous prime is 29999839. The next prime is 29999873. The reversal of 29999868 is 86899992.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1249983 + ... + 1250006.

It is an arithmetic number, because the mean of its divisors is an integer number (5833310).

Almost surely, 2^29999868 is an apocalyptic number.

It is an amenable number.

29999868 is an abundant number, since it is smaller than the sum of its proper divisors (39999852).

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

29999868 is a wasteful number, since it uses less digits than its factorization.

29999868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2499996 (or 2499994 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 60.

The square root of 29999868 is about 5477.2135251421. The cubic root of 29999868 is about 310.7227948673.

The spelling of 29999868 in words is "twenty-nine million, nine hundred ninety-nine thousand, eight hundred sixty-eight".