29987988 has 24 divisors (see below), whose sum is σ = 70176960. Its totient is φ = 9966720.

The previous prime is 29987987. The next prime is 29988029. The reversal of 29987988 is 88978992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29987981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 828 + ... + 7788.

It is an arithmetic number, because the mean of its divisors is an integer number (2924040).

Almost surely, 2^29987988 is an apocalyptic number.

It is an amenable number.

29987988 is an abundant number, since it is smaller than the sum of its proper divisors (40188972).

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

29987988 is a wasteful number, since it uses less digits than its factorization.

29987988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7327 (or 7325 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 60.

The square root of 29987988 is about 5476.1289247058. The cubic root of 29987988 is about 310.6817738626.

The spelling of 29987988 in words is "twenty-nine million, nine hundred eighty-seven thousand, nine hundred eighty-eight".