29988972 has 72 divisors (see below), whose sum is σ = 82402320. Its totient is φ = 9141120.

The previous prime is 29988971. The next prime is 29988977. The reversal of 29988972 is 27988992.

It is not an unprimeable number, because it can be changed into a prime (29988971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64822 + ... + 65282.

Almost surely, 2^29988972 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 29988972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41201160).

29988972 is an abundant number, since it is smaller than the sum of its proper divisors (52413348).

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

29988972 is a wasteful number, since it uses less digits than its factorization.

29988972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623 (or 618 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 29988972 is about 5476.2187684569. The cubic root of 29988972 is about 310.6851719735.

The spelling of 29988972 in words is "twenty-nine million, nine hundred eighty-eight thousand, nine hundred seventy-two".