8720022 has 8 divisors (see below), whose sum is σ = 17440056. Its totient is φ = 2906672.

The previous prime is 8719999. The next prime is 8720027. The reversal of 8720022 is 2200278.

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

8720022 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8720027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 726663 + ... + 726674.

It is an arithmetic number, because the mean of its divisors is an integer number (2180007).

Almost surely, 2^8720022 is an apocalyptic number.

8720022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

8720022 is a wasteful number, since it uses less digits than its factorization.

8720022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453342.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 8720022 is about 2952.9683371144. The cubic root of 8720022 is about 205.8286664115.

The spelling of 8720022 in words is "eight million, seven hundred twenty thousand, twenty-two".