7980402 has 16 divisors (see below), whose sum is σ = 16655040. Its totient is φ = 2544432.

The previous prime is 7980391. The next prime is 7980403. The reversal of 7980402 is 2040897.

It is a self number, because there is not a number n which added to its sum of digits gives 7980402.

It is not an unprimeable number, because it can be changed into a prime (7980403) 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 7 ways as a sum of consecutive naturals, for example, 28777 + ... + 29052.

It is an arithmetic number, because the mean of its divisors is an integer number (1040940).

Almost surely, 2^7980402 is an apocalyptic number.

7980402 is an abundant number, since it is smaller than the sum of its proper divisors (8674638).

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

7980402 is a wasteful number, since it uses less digits than its factorization.

7980402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57857.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 7980402 is about 2824.9605306977. The cubic root of 7980402 is about 199.8365497899.

The spelling of 7980402 in words is "seven million, nine hundred eighty thousand, four hundred two".