80784536 has 24 divisors (see below), whose sum is σ = 176201820. Its totient is φ = 34621776.

The previous prime is 80784503. The next prime is 80784553. The reversal of 80784536 is 63548708.

It is a happy number.

It is a super-2 number, since 2×80784536² = 13052282513470592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80784493 and 80784502.

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 5 ways as a sum of consecutive naturals, for example, 102650 + ... + 103433.

Almost surely, 2^80784536 is an apocalyptic number.

It is an amenable number.

80784536 is an abundant number, since it is smaller than the sum of its proper divisors (95417284).

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

80784536 is a wasteful number, since it uses less digits than its factorization.

80784536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206103 (or 206092 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 80784536 is about 8988.0218068271. The cubic root of 80784536 is about 432.2908849087.

The spelling of 80784536 in words is "eighty million, seven hundred eighty-four thousand, five hundred thirty-six".