29988690 has 16 divisors (see below), whose sum is σ = 71972928. Its totient is φ = 7996976.

The previous prime is 29988683. The next prime is 29988701. The reversal of 29988690 is 9688992.

It is a super-2 number, since 2×29988690² = 1798643055832200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 499782 + ... + 499841.

It is an arithmetic number, because the mean of its divisors is an integer number (4498308).

Almost surely, 2^29988690 is an apocalyptic number.

29988690 is an abundant number, since it is smaller than the sum of its proper divisors (41984238).

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

29988690 is a wasteful number, since it uses less digits than its factorization.

29988690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999633.

The product of its (nonzero) digits is 559872, while the sum is 51.

The square root of 29988690 is about 5476.1930207033. The cubic root of 29988690 is about 310.6841981322.

The spelling of 29988690 in words is "twenty-nine million, nine hundred eighty-eight thousand, six hundred ninety".