29021312 has 32 divisors (see below), whose sum is σ = 61221420. Its totient is φ = 13656064.

The previous prime is 29021297. The next prime is 29021339. The reversal of 29021312 is 21312092.

It can be written as a sum of positive squares in 2 ways, for example, as 28987456 + 33856 = 5384^2 + 184^2 .

It is a tau number, because it is divible by the number of its divisors (32).

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 3 ways as a sum of consecutive naturals, for example, 4493 + ... + 8844.

Almost surely, 2^29021312 is an apocalyptic number.

It is an amenable number.

29021312 is an abundant number, since it is smaller than the sum of its proper divisors (32200108).

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

29021312 is a wasteful number, since it uses less digits than its factorization.

29021312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13368 (or 13356 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 29021312 is about 5387.1432132439. The cubic root of 29021312 is about 307.3069253078.

The spelling of 29021312 in words is "twenty-nine million, twenty-one thousand, three hundred twelve".