20228490879 has 8 divisors (see below), whose sum is σ = 26972145792. Its totient is φ = 13485248280.

The previous prime is 20228490797. The next prime is 20228490937. The reversal of 20228490879 is 97809482202.

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 20228490879 - 2¹⁵ = 20228458111 is a prime.

It is a super-3 number, since 3×20228490879³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20228490479) 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, 39622 + ... + 205004.

It is an arithmetic number, because the mean of its divisors is an integer number (3371518224).

Almost surely, 2^20228490879 is an apocalyptic number.

20228490879 is a deficient number, since it is larger than the sum of its proper divisors (6743654913).

20228490879 is a wasteful number, since it uses less digits than its factorization.

20228490879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206157.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The spelling of 20228490879 in words is "twenty billion, two hundred twenty-eight million, four hundred ninety thousand, eight hundred seventy-nine".