29875920 has 80 divisors (see below), whose sum is σ = 93154752. Its totient is φ = 7920640.

The previous prime is 29875913. The next prime is 29875939. The reversal of 29875920 is 2957892.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67219 + ... + 67661.

Almost surely, 2^29875920 is an apocalyptic number.

29875920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29875920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46577376).

29875920 is an abundant number, since it is smaller than the sum of its proper divisors (63278832).

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

29875920 is a wasteful number, since it uses less digits than its factorization.

29875920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 29875920 is about 5465.8869362620. The cubic root of 29875920 is about 310.2942748480.

The spelling of 29875920 in words is "twenty-nine million, eight hundred seventy-five thousand, nine hundred twenty".