7820928 has 128 divisors (see below), whose sum is σ = 24153600. Its totient is φ = 2488320.

The previous prime is 7820927. The next prime is 7820929. The reversal of 7820928 is 8290287.

It is an interprime number because it is at equal distance from previous prime (7820927) and next prime (7820929).

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×7820928² = 122333829562368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 7820892 and 7820901.

It is not an unprimeable number, because it can be changed into a prime (7820927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107100 + ... + 107172.

It is an arithmetic number, because the mean of its divisors is an integer number (188700).

Almost surely, 2^7820928 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 7820928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12076800).

7820928 is an abundant number, since it is smaller than the sum of its proper divisors (16332672).

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

7820928 is a wasteful number, since it uses less digits than its factorization.

7820928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 7820928 is about 2796.5922119608. The cubic root of 7820928 is about 198.4964584724.

The spelling of 7820928 in words is "seven million, eight hundred twenty thousand, nine hundred twenty-eight".