29987712 has 64 divisors (see below), whose sum is σ = 88515600. Its totient is φ = 9994752.

The previous prime is 29987701. The next prime is 29987717. The reversal of 29987712 is 21778992.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29987717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 883 + ... + 7794.

Almost surely, 2^29987712 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 29987712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44257800).

29987712 is an abundant number, since it is smaller than the sum of its proper divisors (58527888).

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

29987712 is an equidigital number, since it uses as much as digits as its factorization.

29987712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8700 (or 8682 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 29987712 is about 5476.1037243646. The cubic root of 29987712 is about 310.6808207206.

The spelling of 29987712 in words is "twenty-nine million, nine hundred eighty-seven thousand, seven hundred twelve".