29993880 has 96 divisors (see below), whose sum is σ = 104693040. Its totient is φ = 6854400.

The previous prime is 29993867. The next prime is 29993881. The reversal of 29993880 is 8839992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29993881) 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 23 ways as a sum of consecutive naturals, for example, 3330 + ... + 8430.

Almost surely, 2^29993880 is an apocalyptic number.

29993880 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 29993880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52346520).

29993880 is an abundant number, since it is smaller than the sum of its proper divisors (74699160).

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

29993880 is a wasteful number, since it uses less digits than its factorization.

29993880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5129 (or 5118 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 48.

The square root of 29993880 is about 5476.6668695476. Note that the first 3 decimals coincide. The cubic root of 29993880 is about 310.7021199774.

The spelling of 29993880 in words is "twenty-nine million, nine hundred ninety-three thousand, eight hundred eighty".