80783520 has 192 divisors, whose sum is σ = 269982720. Its totient is φ = 20275200.

The previous prime is 80783503. The next prime is 80783533. The reversal of 80783520 is 2538708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 907636 + ... + 907724.

It is an arithmetic number, because the mean of its divisors is an integer number (1406160).

Almost surely, 2^80783520 is an apocalyptic number.

80783520 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 80783520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134991360).

80783520 is an abundant number, since it is smaller than the sum of its proper divisors (189199200).

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

80783520 is a wasteful number, since it uses less digits than its factorization.

80783520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 80783520 is about 8987.9652869824. The cubic root of 80783520 is about 432.2890726420.

The spelling of 80783520 in words is "eighty million, seven hundred eighty-three thousand, five hundred twenty".