20334428 has 12 divisors (see below), whose sum is σ = 35616840. Its totient is φ = 10158192.

The previous prime is 20334403. The next prime is 20334437. The reversal of 20334428 is 82443302.

It is a junction number, because it is equal to n+sod(n) for n = 20334397 and 20334406.

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, 7550 + ... + 9882.

It is an arithmetic number, because the mean of its divisors is an integer number (2968070).

Almost surely, 2^20334428 is an apocalyptic number.

It is an amenable number.

20334428 is a deficient number, since it is larger than the sum of its proper divisors (15282412).

20334428 is a wasteful number, since it uses less digits than its factorization.

20334428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4516 (or 4514 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 20334428 is about 4509.3711313220. The cubic root of 20334428 is about 272.9463682791.

The spelling of 20334428 in words is "twenty million, three hundred thirty-four thousand, four hundred twenty-eight".