29680690 has 32 divisors (see below), whose sum is σ = 57844080. Its totient is φ = 10900224.

The previous prime is 29680681. The next prime is 29680723. The reversal of 29680690 is 9608692.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 20493729 + 9186961 = 4527^2 + 3031^2 .

It is a super-2 number, since 2×29680690² = 1761886717752200, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 29272 + ... + 30268.

Almost surely, 2^29680690 is an apocalyptic number.

29680690 is a deficient number, since it is larger than the sum of its proper divisors (28163390).

29680690 is a wasteful number, since it uses less digits than its factorization.

29680690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 29680690 is about 5447.9987151247. The cubic root of 29680690 is about 309.6169045002.

The spelling of 29680690 in words is "twenty-nine million, six hundred eighty thousand, six hundred ninety".