80935540 has 48 divisors (see below), whose sum is σ = 194971392. Its totient is φ = 27645696.

The previous prime is 80935529. The next prime is 80935553. The reversal of 80935540 is 4553908.

It is a junction number, because it is equal to n+sod(n) for n = 80935496 and 80935505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42897 + ... + 44743.

It is an arithmetic number, because the mean of its divisors is an integer number (4061904).

Almost surely, 2^80935540 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 80935540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97485696).

80935540 is an abundant number, since it is smaller than the sum of its proper divisors (114035852).

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

80935540 is a wasteful number, since it uses less digits than its factorization.

80935540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176 (or 2174 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 80935540 is about 8996.4181761410. The cubic root of 80935540 is about 432.5600660559.

The spelling of 80935540 in words is "eighty million, nine hundred thirty-five thousand, five hundred forty".