20486928 has 160 divisors (see below), whose sum is σ = 69138432. Its totient is φ = 5068800.

The previous prime is 20486927. The next prime is 20486933. The reversal of 20486928 is 82968402.

It is not an unprimeable number, because it can be changed into a prime (20486923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84888 + ... + 85128.

Almost surely, 2^20486928 is an apocalyptic number.

20486928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20486928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34569216).

20486928 is an abundant number, since it is smaller than the sum of its proper divisors (48651504).

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

20486928 is a wasteful number, since it uses less digits than its factorization.

20486928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 20486928 is about 4526.2487779617. The cubic root of 20486928 is about 273.6269988062.

The spelling of 20486928 in words is "twenty million, four hundred eighty-six thousand, nine hundred twenty-eight".