7920556 has 48 divisors (see below), whose sum is σ = 16934400. Its totient is φ = 3234000.

The previous prime is 7920551. The next prime is 7920559. The reversal of 7920556 is 6550297.

It is not an unprimeable number, because it can be changed into a prime (7920551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31431 + ... + 31681.

It is an arithmetic number, because the mean of its divisors is an integer number (352800).

Almost surely, 2^7920556 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 7920556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8467200).

7920556 is an abundant number, since it is smaller than the sum of its proper divisors (9013844).

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

7920556 is a wasteful number, since it uses less digits than its factorization.

7920556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 7920556 is about 2814.3482371590. The cubic root of 7920556 is about 199.3357630553.

The spelling of 7920556 in words is "seven million, nine hundred twenty thousand, five hundred fifty-six".