80540780 has 24 divisors (see below), whose sum is σ = 169305360. Its totient is φ = 32184000.

The previous prime is 80540777. The next prime is 80540783. The reversal of 80540780 is 8704508.

It is an interprime number because it is at equal distance from previous prime (80540777) and next prime (80540783).

It is not an unprimeable number, because it can be changed into a prime (80540783) 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, 34655 + ... + 36905.

It is an arithmetic number, because the mean of its divisors is an integer number (7054390).

Almost surely, 2^80540780 is an apocalyptic number.

It is an amenable number.

80540780 is an abundant number, since it is smaller than the sum of its proper divisors (88764580).

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

80540780 is a wasteful number, since it uses less digits than its factorization.

80540780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4049 (or 4047 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 80540780 is about 8974.4515152738. The cubic root of 80540780 is about 431.8556545068.

The spelling of 80540780 in words is "eighty million, five hundred forty thousand, seven hundred eighty".