80007720 has 64 divisors (see below), whose sum is σ = 258491520. Its totient is φ = 19693824.

The previous prime is 80007713. The next prime is 80007721. The reversal of 80007720 is 2770008.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (80007721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24084 + ... + 27203.

It is an arithmetic number, because the mean of its divisors is an integer number (4038930).

Almost surely, 2^80007720 is an apocalyptic number.

It is an amenable number.

80007720 is an abundant number, since it is smaller than the sum of its proper divisors (178483800).

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

80007720 is a wasteful number, since it uses less digits than its factorization.

80007720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51314 (or 51310 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 80007720 is about 8944.7034607079. The cubic root of 80007720 is about 430.9007977571.

Adding to 80007720 its reverse (2770008), we get a palindrome (82777728).

The spelling of 80007720 in words is "eighty million, seven thousand, seven hundred twenty".