8011220 has 24 divisors (see below), whose sum is σ = 19227264. Its totient is φ = 2746656.

The previous prime is 8011207. The next prime is 8011247. The reversal of 8011220 is 221108.

8011220 = T₄₄₃ + T₄₄₄ + ... + T₅₁₂.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 8011195 and 8011204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28472 + ... + 28751.

It is an arithmetic number, because the mean of its divisors is an integer number (801136).

Almost surely, 2^8011220 is an apocalyptic number.

It is an amenable number.

8011220 is an abundant number, since it is smaller than the sum of its proper divisors (11216044).

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

8011220 is a wasteful number, since it uses less digits than its factorization.

8011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57239 (or 57237 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 8011220 is about 2830.4098643129. The cubic root of 8011220 is about 200.0934563228.

Adding to 8011220 its reverse (221108), we get a palindrome (8232328).

The spelling of 8011220 in words is "eight million, eleven thousand, two hundred twenty".