20095020 has 192 divisors, whose sum is σ = 72576000. Its totient is φ = 4561920.

The previous prime is 20095013. The next prime is 20095021. The reversal of 20095020 is 2059002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20094984 and 20095002.

It is not an unprimeable number, because it can be changed into a prime (20095021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 100881 + ... + 101079.

It is an arithmetic number, because the mean of its divisors is an integer number (378000).

Almost surely, 2^20095020 is an apocalyptic number.

20095020 is a gapful number since it is divisible by the number (20) 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 20095020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36288000).

20095020 is an abundant number, since it is smaller than the sum of its proper divisors (52480980).

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

20095020 is a wasteful number, since it uses less digits than its factorization.

20095020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 20095020 is about 4482.7469257142. The cubic root of 20095020 is about 271.8709559446.

The spelling of 20095020 in words is "twenty million, ninety-five thousand, twenty".