80812758 has 24 divisors (see below), whose sum is σ = 175016808. Its totient is φ = 24865152.

The previous prime is 80812751. The next prime is 80812769. The reversal of 80812758 is 85721808.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80812751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38835 + ... + 40862.

It is an arithmetic number, because the mean of its divisors is an integer number (7292367).

Almost surely, 2^80812758 is an apocalyptic number.

80812758 is an abundant number, since it is smaller than the sum of its proper divisors (94204050).

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

80812758 is a wasteful number, since it uses less digits than its factorization.

80812758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79728 (or 79715 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 39.

The square root of 80812758 is about 8989.5916481228. The cubic root of 80812758 is about 432.3412191828.

The spelling of 80812758 in words is "eighty million, eight hundred twelve thousand, seven hundred fifty-eight".