29121472 has 28 divisors (see below), whose sum is σ = 58069480. Its totient is φ = 14489856.

The previous prime is 29121467. The next prime is 29121487. The reversal of 29121472 is 27412192.

It is a self number, because there is not a number n which added to its sum of digits gives 29121472.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13663 + ... + 15649.

It is an arithmetic number, because the mean of its divisors is an integer number (2073910).

Almost surely, 2^29121472 is an apocalyptic number.

It is an amenable number.

29121472 is a deficient number, since it is larger than the sum of its proper divisors (28948008).

29121472 is a wasteful number, since it uses less digits than its factorization.

29121472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228 (or 2218 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 29121472 is about 5396.4314134435. The cubic root of 29121472 is about 307.6600510801.

The spelling of 29121472 in words is "twenty-nine million, one hundred twenty-one thousand, four hundred seventy-two".