7880004 has 108 divisors (see below), whose sum is σ = 23044112. Its totient is φ = 2352240.

The previous prime is 7879999. The next prime is 7880009. The reversal of 7880004 is 4000887.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7879999) and next prime (7880009).

It is a tau number, because it is divible by the number of its divisors (108).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 7880004.

It is not an unprimeable number, because it can be changed into a prime (7880009) 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 35 ways as a sum of consecutive naturals, for example, 117579 + ... + 117645.

Almost surely, 2^7880004 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 7880004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11522056).

7880004 is an abundant number, since it is smaller than the sum of its proper divisors (15164108).

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

7880004 is a wasteful number, since it uses less digits than its factorization.

7880004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 7880004 is about 2807.1344819940. The cubic root of 7880004 is about 198.9949915829.

The spelling of 7880004 in words is "seven million, eight hundred eighty thousand, four".