29886720 has 144 divisors (see below), whose sum is σ = 98210112. Its totient is φ = 7741440.

The previous prime is 29886719. The next prime is 29886737. The reversal of 29886720 is 2768892.

It is a happy 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, 165030 + ... + 165210.

Almost surely, 2^29886720 is an apocalyptic number.

29886720 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 29886720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49105056).

29886720 is an abundant number, since it is smaller than the sum of its proper divisors (68323392).

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

29886720 is a wasteful number, since it uses less digits than its factorization.

29886720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 29886720 is about 5466.8747927861. The cubic root of 29886720 is about 310.3316603013.

The spelling of 29886720 in words is "twenty-nine million, eight hundred eighty-six thousand, seven hundred twenty".