7859920 has 40 divisors (see below), whose sum is σ = 19239840. Its totient is φ = 2977920.

The previous prime is 7859879. The next prime is 7859923. The reversal of 7859920 is 299587.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7859923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1066 + ... + 4105.

It is an arithmetic number, because the mean of its divisors is an integer number (480996).

Almost surely, 2^7859920 is an apocalyptic number.

It is an amenable number.

7859920 is an abundant number, since it is smaller than the sum of its proper divisors (11379920).

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

7859920 is a wasteful number, since it uses less digits than its factorization.

7859920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5203 (or 5197 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 7859920 is about 2803.5548862114. The cubic root of 7859920 is about 198.8257862687.

The spelling of 7859920 in words is "seven million, eight hundred fifty-nine thousand, nine hundred twenty".