20273928 has 96 divisors (see below), whose sum is σ = 55996800. Its totient is φ = 6110208.

The previous prime is 20273927. The next prime is 20273947. The reversal of 20273928 is 82937202.

It is a super-2 number, since 2×20273928² = 822064313098368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20273927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 256593 + ... + 256671.

It is an arithmetic number, because the mean of its divisors is an integer number (583300).

Almost surely, 2^20273928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20273928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27998400).

20273928 is an abundant number, since it is smaller than the sum of its proper divisors (35722872).

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

20273928 is a wasteful number, since it uses less digits than its factorization.

20273928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 20273928 is about 4502.6578817405. The cubic root of 20273928 is about 272.6754048433.

The spelling of 20273928 in words is "twenty million, two hundred seventy-three thousand, nine hundred twenty-eight".