29021330 has 16 divisors (see below), whose sum is σ = 56256984. Its totient is φ = 10715520.

The previous prime is 29021297. The next prime is 29021339. The reversal of 29021330 is 3312092.

It can be written as a sum of positive squares in 4 ways, for example, as 13756681 + 15264649 = 3709^2 + 3907^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (29021339) 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 7 ways as a sum of consecutive naturals, for example, 111491 + ... + 111750.

Almost surely, 2^29021330 is an apocalyptic number.

29021330 is a deficient number, since it is larger than the sum of its proper divisors (27235654).

29021330 is a wasteful number, since it uses less digits than its factorization.

29021330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223261.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 29021330 is about 5387.1448838879. The cubic root of 29021330 is about 307.3069888418.

The spelling of 29021330 in words is "twenty-nine million, twenty-one thousand, three hundred thirty".