80496640 has 96 divisors (see below), whose sum is σ = 220933440. Its totient is φ = 27574272.

The previous prime is 80496631. The next prime is 80496641. The reversal of 80496640 is 4669408.

It is a self number, because there is not a number n which added to its sum of digits gives 80496640.

It is not an unprimeable number, because it can be changed into a prime (80496641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71119 + ... + 72241.

It is an arithmetic number, because the mean of its divisors is an integer number (2301390).

Almost surely, 2^80496640 is an apocalyptic number.

80496640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80496640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110466720).

80496640 is an abundant number, since it is smaller than the sum of its proper divisors (140436800).

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

80496640 is a wasteful number, since it uses less digits than its factorization.

80496640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157 (or 1137 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 80496640 is about 8971.9919750298. The cubic root of 80496640 is about 431.7767479291.

The spelling of 80496640 in words is "eighty million, four hundred ninety-six thousand, six hundred forty".