80365140 has 36 divisors (see below), whose sum is σ = 243774804. Its totient is φ = 21430656.

The previous prime is 80365099. The next prime is 80365169. The reversal of 80365140 is 4156308.

80365140 is a `hidden beast` number, since 8 + 0 + 3 + 651 + 4 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 46212804 + 34152336 = 6798^2 + 5844^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 223057 + ... + 223416.

Almost surely, 2^80365140 is an apocalyptic number.

It is an amenable number.

80365140 is an abundant number, since it is smaller than the sum of its proper divisors (163409664).

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

80365140 is a wasteful number, since it uses less digits than its factorization.

80365140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446488 (or 446483 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 80365140 is about 8964.6606182276. The cubic root of 80365140 is about 431.5415017190.

The spelling of 80365140 in words is "eighty million, three hundred sixty-five thousand, one hundred forty".