20941928 has 16 divisors (see below), whose sum is σ = 44875680. Its totient is φ = 8975088.

The previous prime is 20941927. The next prime is 20941981. The reversal of 20941928 is 82914902.

It is not an unprimeable number, because it can be changed into a prime (20941927) by changing a digit.

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, 186926 + ... + 187037.

It is an arithmetic number, because the mean of its divisors is an integer number (2804730).

Almost surely, 2^20941928 is an apocalyptic number.

20941928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20941928 is an abundant number, since it is smaller than the sum of its proper divisors (23933752).

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

20941928 is a wasteful number, since it uses less digits than its factorization.

20941928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373976 (or 373972 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 20941928 is about 4576.2351338191. The cubic root of 20941928 is about 275.6378713590.

The spelling of 20941928 in words is "twenty million, nine hundred forty-one thousand, nine hundred twenty-eight".