7199920 has 160 divisors (see below), whose sum is σ = 21998592. Its totient is φ = 2128896.

The previous prime is 7199911. The next prime is 7199921. The reversal of 7199920 is 299917.

It is a self number, because there is not a number n which added to its sum of digits gives 7199920.

It is not an unprimeable number, because it can be changed into a prime (7199921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167419 + ... + 167461.

Almost surely, 2^7199920 is an apocalyptic number.

7199920 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7199920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10999296).

7199920 is an abundant number, since it is smaller than the sum of its proper divisors (14798672).

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

7199920 is a wasteful number, since it uses less digits than its factorization.

7199920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 37.

The square root of 7199920 is about 2683.2666658385. The cubic root of 7199920 is about 193.0971617412.

The spelling of 7199920 in words is "seven million, one hundred ninety-nine thousand, nine hundred twenty".