29870868 has 12 divisors (see below), whose sum is σ = 69698720. Its totient is φ = 9956952.

The previous prime is 29870861. The next prime is 29870881. The reversal of 29870868 is 86807892.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29870861) 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 3 ways as a sum of consecutive naturals, for example, 1244608 + ... + 1244631.

Almost surely, 2^29870868 is an apocalyptic number.

It is an amenable number.

29870868 is an abundant number, since it is smaller than the sum of its proper divisors (39827852).

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

29870868 is a wasteful number, since it uses less digits than its factorization.

29870868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2489246 (or 2489244 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 29870868 is about 5465.4247776362. The cubic root of 29870868 is about 310.2767836706.

The spelling of 29870868 in words is "twenty-nine million, eight hundred seventy thousand, eight hundred sixty-eight".