20195928 has 24 divisors (see below), whose sum is σ = 54697500. Its totient is φ = 6731952.

The previous prime is 20195893. The next prime is 20195933. The reversal of 20195928 is 82959102.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 20195892 and 20195901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 140178 + ... + 140321.

Almost surely, 2^20195928 is an apocalyptic number.

It is an amenable number.

20195928 is an abundant number, since it is smaller than the sum of its proper divisors (34501572).

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

20195928 is a wasteful number, since it uses less digits than its factorization.

20195928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280511 (or 280504 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 20195928 is about 4493.9879839626. The cubic root of 20195928 is about 272.3252668774.

The spelling of 20195928 in words is "twenty million, one hundred ninety-five thousand, nine hundred twenty-eight".