20375928 has 128 divisors (see below), whose sum is σ = 62208000. Its totient is φ = 6151680.

The previous prime is 20375921. The next prime is 20375933. The reversal of 20375928 is 82957302.

It is a happy number.

It is a super-2 number, since 2×20375928² = 830356883722368, which contains 22 as substring.

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 = 20375892 and 20375901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20375921) 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, 113743 + ... + 113921.

It is an arithmetic number, because the mean of its divisors is an integer number (486000).

Almost surely, 2^20375928 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 20375928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31104000).

20375928 is an abundant number, since it is smaller than the sum of its proper divisors (41832072).

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

20375928 is a wasteful number, since it uses less digits than its factorization.

20375928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 20375928 is about 4513.9703144793. The cubic root of 20375928 is about 273.1319251282.

The spelling of 20375928 in words is "twenty million, three hundred seventy-five thousand, nine hundred twenty-eight".