80988340 has 24 divisors (see below), whose sum is σ = 180080712. Its totient is φ = 30489600.

The previous prime is 80988331. The next prime is 80988353. The reversal of 80988340 is 4388908.

It can be written as a sum of positive squares in 4 ways, for example, as 1493284 + 79495056 = 1222^2 + 8916^2 .

It is a super-2 number, since 2×80988340² = 13118222431911200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80988293 and 80988302.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 118761 + ... + 119440.

It is an arithmetic number, because the mean of its divisors is an integer number (7503363).

Almost surely, 2^80988340 is an apocalyptic number.

It is an amenable number.

80988340 is an abundant number, since it is smaller than the sum of its proper divisors (99092372).

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

80988340 is a wasteful number, since it uses less digits than its factorization.

80988340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238227 (or 238225 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 80988340 is about 8999.3521989085. The cubic root of 80988340 is about 432.6541088244.

The spelling of 80988340 in words is "eighty million, nine hundred eighty-eight thousand, three hundred forty".