7920822 has 64 divisors (see below), whose sum is σ = 19837440. Its totient is φ = 2052864.

The previous prime is 7920821. The next prime is 7920833. The reversal of 7920822 is 2280297.

It is a self number, because there is not a number n which added to its sum of digits gives 7920822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7920821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48513 + ... + 48675.

It is an arithmetic number, because the mean of its divisors is an integer number (309960).

Almost surely, 2^7920822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7920822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9918720).

7920822 is an abundant number, since it is smaller than the sum of its proper divisors (11916618).

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

7920822 is a wasteful number, since it uses less digits than its factorization.

7920822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 7920822 is about 2814.3954945956. The cubic root of 7920822 is about 199.3379944946.

The spelling of 7920822 in words is "seven million, nine hundred twenty thousand, eight hundred twenty-two".