80756040 has 32 divisors (see below), whose sum is σ = 242268480. Its totient is φ = 21534912.

The previous prime is 80755999. The next prime is 80756051. The reversal of 80756040 is 4065708.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 80755989 and 80756007.

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 7 ways as a sum of consecutive naturals, for example, 336364 + ... + 336603.

It is an arithmetic number, because the mean of its divisors is an integer number (7570890).

Almost surely, 2^80756040 is an apocalyptic number.

It is an amenable number.

80756040 is an abundant number, since it is smaller than the sum of its proper divisors (161512440).

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

80756040 is a wasteful number, since it uses less digits than its factorization.

80756040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672981 (or 672977 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 80756040 is about 8986.4364461114. The cubic root of 80756040 is about 432.2400500568.

The spelling of 80756040 in words is "eighty million, seven hundred fifty-six thousand, forty".