20228995 has 8 divisors (see below), whose sum is σ = 24354720. Its totient is φ = 16129920.

The previous prime is 20228993. The next prime is 20229007. The reversal of 20228995 is 59982202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20228995 - 2¹ = 20228993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20228993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4950 + ... + 8059.

It is an arithmetic number, because the mean of its divisors is an integer number (3044340).

Almost surely, 2^20228995 is an apocalyptic number.

20228995 is a deficient number, since it is larger than the sum of its proper divisors (4125725).

20228995 is a wasteful number, since it uses less digits than its factorization.

20228995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13325.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 20228995 is about 4497.6655055706. The cubic root of 20228995 is about 272.4738128189.

The spelling of 20228995 in words is "twenty million, two hundred twenty-eight thousand, nine hundred ninety-five".