8266420020 has 24 divisors (see below), whose sum is σ = 23145976224. Its totient is φ = 2204378656.

The previous prime is 8266419991. The next prime is 8266420027. The reversal of 8266420020 is 200246628.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 8266420020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8266420027) 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, 68886774 + ... + 68886893.

It is an arithmetic number, because the mean of its divisors is an integer number (964415676).

Almost surely, 2^8266420020 is an apocalyptic number.

It is an amenable number.

8266420020 is an abundant number, since it is smaller than the sum of its proper divisors (14879556204).

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

8266420020 is a wasteful number, since it uses less digits than its factorization.

8266420020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137773679 (or 137773677 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 8266420020 is about 90919.8549272930. The cubic root of 8266420020 is about 2021.9596722677.

Adding to 8266420020 its reverse (200246628), we get a palindrome (8466666648).

The spelling of 8266420020 in words is "eight billion, two hundred sixty-six million, four hundred twenty thousand, twenty".