6422920 has 96 divisors (see below), whose sum is σ = 17544600. Its totient is φ = 2107392.

The previous prime is 6422909. The next prime is 6422929. The reversal of 6422920 is 292246.

6422920 = T₆₅₁ + T₆₅₂ + ... + T₆₇₉.

It can be written as a sum of positive squares in 4 ways, for example, as 3261636 + 3161284 = 1806^2 + 1778^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6422929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56784 + ... + 56896.

Almost surely, 2^6422920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6422920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8772300).

6422920 is an abundant number, since it is smaller than the sum of its proper divisors (11121680).

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

6422920 is a wasteful number, since it uses less digits than its factorization.

6422920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 6422920 is about 2534.3480423967. The cubic root of 6422920 is about 185.8849251586.

The spelling of 6422920 in words is "six million, four hundred twenty-two thousand, nine hundred twenty".