29666220 has 96 divisors (see below), whose sum is σ = 89268480. Its totient is φ = 7338240.

The previous prime is 29666183. The next prime is 29666227. The reversal of 29666220 is 2266692.

It is not an unprimeable number, because it can be changed into a prime (29666227) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 60175 + ... + 60665.

It is an arithmetic number, because the mean of its divisors is an integer number (929880).

Almost surely, 2^29666220 is an apocalyptic number.

29666220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29666220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44634240).

29666220 is an abundant number, since it is smaller than the sum of its proper divisors (59602260).

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

29666220 is a wasteful number, since it uses less digits than its factorization.

29666220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575 (or 573 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 29666220 is about 5446.6705426343. The cubic root of 29666220 is about 309.5665812669.

The spelling of 29666220 in words is "twenty-nine million, six hundred sixty-six thousand, two hundred twenty".