7980780 has 24 divisors (see below), whose sum is σ = 22346352. Its totient is φ = 2128192.

The previous prime is 7980761. The next prime is 7980787. The reversal of 7980780 is 870897.

It is not an unprimeable number, because it can be changed into a prime (7980787) 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, 66447 + ... + 66566.

It is an arithmetic number, because the mean of its divisors is an integer number (931098).

Almost surely, 2^7980780 is an apocalyptic number.

It is an amenable number.

7980780 is an abundant number, since it is smaller than the sum of its proper divisors (14365572).

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

7980780 is a wasteful number, since it uses less digits than its factorization.

7980780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133025 (or 133023 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 39.

The square root of 7980780 is about 2825.0274334951. The cubic root of 7980780 is about 199.8397048951.

The spelling of 7980780 in words is "seven million, nine hundred eighty thousand, seven hundred eighty".