80445340 has 24 divisors (see below), whose sum is σ = 169252272. Its totient is φ = 32117760.

The previous prime is 80445317. The next prime is 80445349. The reversal of 80445340 is 4354408.

It is a junction number, because it is equal to n+sod(n) for n = 80445299 and 80445308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80445349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8055 + ... + 15025.

It is an arithmetic number, because the mean of its divisors is an integer number (7052178).

Almost surely, 2^80445340 is an apocalyptic number.

It is an amenable number.

80445340 is an abundant number, since it is smaller than the sum of its proper divisors (88806932).

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

80445340 is a wasteful number, since it uses less digits than its factorization.

80445340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7557 (or 7555 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 80445340 is about 8969.1326225003. The cubic root of 80445340 is about 431.6850055731.

Adding to 80445340 its reverse (4354408), we get a palindrome (84799748).

The spelling of 80445340 in words is "eighty million, four hundred forty-five thousand, three hundred forty".