29688668 has 6 divisors (see below), whose sum is σ = 51955176. Its totient is φ = 14844332.

The previous prime is 29688667. The next prime is 29688677. The reversal of 29688668 is 86688692.

It is a super-2 number, since 2×29688668² = 1762834015228448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29688667) 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 as a sum of consecutive naturals, namely, 3711080 + ... + 3711087.

It is an arithmetic number, because the mean of its divisors is an integer number (8659196).

Almost surely, 2^29688668 is an apocalyptic number.

It is an amenable number.

29688668 is a deficient number, since it is larger than the sum of its proper divisors (22266508).

29688668 is a wasteful number, since it uses less digits than its factorization.

29688668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7422171 (or 7422169 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 53.

The square root of 29688668 is about 5448.7308614025. The cubic root of 29688668 is about 309.6446431004.

The spelling of 29688668 in words is "twenty-nine million, six hundred eighty-eight thousand, six hundred sixty-eight".