20429448 has 32 divisors (see below), whose sum is σ = 55003200. Its totient is φ = 6285888.

The previous prime is 20429417. The next prime is 20429471. The reversal of 20429448 is 84492402.

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 7 ways as a sum of consecutive naturals, for example, 32428 + ... + 33051.

It is an arithmetic number, because the mean of its divisors is an integer number (1718850).

Almost surely, 2^20429448 is an apocalyptic number.

It is an amenable number.

20429448 is an abundant number, since it is smaller than the sum of its proper divisors (34573752).

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

20429448 is a wasteful number, since it uses less digits than its factorization.

20429448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65501 (or 65497 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 20429448 is about 4519.8946890387. The cubic root of 20429448 is about 273.3708547869.

The spelling of 20429448 in words is "twenty million, four hundred twenty-nine thousand, four hundred forty-eight".