29421928 has 32 divisors (see below), whose sum is σ = 56891520. Its totient is φ = 14256000.

The previous prime is 29421913. The next prime is 29421949. The reversal of 29421928 is 82912492.

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 7 ways as a sum of consecutive naturals, for example, 88723 + ... + 89053.

It is an arithmetic number, because the mean of its divisors is an integer number (1777860).

Almost surely, 2^29421928 is an apocalyptic number.

It is an amenable number.

29421928 is a deficient number, since it is larger than the sum of its proper divisors (27469592).

29421928 is a wasteful number, since it uses less digits than its factorization.

29421928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649 (or 645 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 29421928 is about 5424.1983739535. The cubic root of 29421928 is about 308.7145102820.

It can be divided in two parts, 294 and 21928, that added together give a palindrome (22222).

The spelling of 29421928 in words is "twenty-nine million, four hundred twenty-one thousand, nine hundred twenty-eight".