80784036 has 36 divisors (see below), whose sum is σ = 205519132. Its totient is φ = 26754624.

The previous prime is 80784007. The next prime is 80784043. The reversal of 80784036 is 63048708.

It can be written as a sum of positive squares in 2 ways, for example, as 7784100 + 72999936 = 2790^2 + 8544^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 1495 + ... + 12798.

Almost surely, 2^80784036 is an apocalyptic number.

It is an amenable number.

80784036 is an abundant number, since it is smaller than the sum of its proper divisors (124735096).

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

80784036 is a wasteful number, since it uses less digits than its factorization.

80784036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14460 (or 14455 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 80784036 is about 8987.9939919873. The cubic root of 80784036 is about 432.2899930471.

The spelling of 80784036 in words is "eighty million, seven hundred eighty-four thousand, thirty-six".