80687040 has 112 divisors (see below), whose sum is σ = 292803072. Its totient is φ = 18441216.

The previous prime is 80687029. The next prime is 80687069. The reversal of 80687040 is 4078608.

It is a tau number, because it is divible by the number of its divisors (112).

It is a junction number, because it is equal to n+sod(n) for n = 80686992 and 80687010.

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, 717 + ... + 12723.

Almost surely, 2^80687040 is an apocalyptic number.

80687040 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 80687040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146401536).

80687040 is an abundant number, since it is smaller than the sum of its proper divisors (212116032).

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

80687040 is a wasteful number, since it uses less digits than its factorization.

80687040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12034 (or 12024 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 80687040 is about 8982.5965065787. The cubic root of 80687040 is about 432.1169093738.

The spelling of 80687040 in words is "eighty million, six hundred eighty-seven thousand, forty".