29992872 has 128 divisors (see below), whose sum is σ = 95477760. Its totient is φ = 7637760.

The previous prime is 29992867. The next prime is 29992883. The reversal of 29992872 is 27829992.

It is a happy number.

It is an unprimeable number.

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, 67483 + ... + 67925.

It is an arithmetic number, because the mean of its divisors is an integer number (745920).

Almost surely, 2^29992872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29992872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47738880).

29992872 is an abundant number, since it is smaller than the sum of its proper divisors (65484888).

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

29992872 is a wasteful number, since it uses less digits than its factorization.

29992872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503 (or 499 counting only the distinct ones).

The product of its digits is 326592, while the sum is 48.

The square root of 29992872 is about 5476.5748419975. The cubic root of 29992872 is about 310.6986393646.

The spelling of 29992872 in words is "twenty-nine million, nine hundred ninety-two thousand, eight hundred seventy-two".