20045928 has 32 divisors (see below), whose sum is σ = 57274560. Its totient is φ = 5727360.

The previous prime is 20045887. The next prime is 20045929. The reversal of 20045928 is 82954002.

It is a junction number, because it is equal to n+sod(n) for n = 20045895 and 20045904.

It is not an unprimeable number, because it can be changed into a prime (20045929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59493 + ... + 59828.

It is an arithmetic number, because the mean of its divisors is an integer number (1789830).

Almost surely, 2^20045928 is an apocalyptic number.

20045928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20045928 is an abundant number, since it is smaller than the sum of its proper divisors (37228632).

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

20045928 is a wasteful number, since it uses less digits than its factorization.

20045928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119337 (or 119333 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 20045928 is about 4477.2679169333. The cubic root of 20045928 is about 271.6493824342.

The spelling of 20045928 in words is "twenty million, forty-five thousand, nine hundred twenty-eight".