7720104 has 32 divisors (see below), whose sum is σ = 22057920. Its totient is φ = 2205696.

The previous prime is 7720103. The next prime is 7720109. The reversal of 7720104 is 4010277.

7720104 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (7720103) 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, 22809 + ... + 23144.

It is an arithmetic number, because the mean of its divisors is an integer number (689310).

Almost surely, 2^7720104 is an apocalyptic number.

It is an amenable number.

7720104 is an abundant number, since it is smaller than the sum of its proper divisors (14337816).

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

7720104 is a wasteful number, since it uses less digits than its factorization.

7720104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45969 (or 45965 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 7720104 is about 2778.5075130365. The cubic root of 7720104 is about 197.6397899404.

The spelling of 7720104 in words is "seven million, seven hundred twenty thousand, one hundred four".