20928126 has 16 divisors (see below), whose sum is σ = 42566400. Its totient is φ = 6857688.

The previous prime is 20928107. The next prime is 20928157. The reversal of 20928126 is 62182902.

It is a junction number, because it is equal to n+sod(n) for n = 20928093 and 20928102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29206 + ... + 29913.

It is an arithmetic number, because the mean of its divisors is an integer number (2660400).

Almost surely, 2^20928126 is an apocalyptic number.

20928126 is an abundant number, since it is smaller than the sum of its proper divisors (21638274).

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

20928126 is a wasteful number, since it uses less digits than its factorization.

20928126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59183.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 20928126 is about 4574.7268770933. The cubic root of 20928126 is about 275.5773040293.

The spelling of 20928126 in words is "twenty million, nine hundred twenty-eight thousand, one hundred twenty-six".