80343720 has 96 divisors (see below), whose sum is σ = 265093920. Its totient is φ = 21098880.

The previous prime is 80343719. The next prime is 80343721. The reversal of 80343720 is 2734308.

It is an interprime number because it is at equal distance from previous prime (80343719) and next prime (80343721).

It is a super-2 number, since 2×80343720² = 12910226686876800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80343721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22455 + ... + 25785.

It is an arithmetic number, because the mean of its divisors is an integer number (2761395).

Almost surely, 2^80343720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80343720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132546960).

80343720 is an abundant number, since it is smaller than the sum of its proper divisors (184750200).

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

80343720 is a wasteful number, since it uses less digits than its factorization.

80343720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3415 (or 3408 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 80343720 is about 8963.4658475391. The cubic root of 80343720 is about 431.5031582268.

The spelling of 80343720 in words is "eighty million, three hundred forty-three thousand, seven hundred twenty".