80729376 has 96 divisors (see below), whose sum is σ = 260846208. Its totient is φ = 21288960.

The previous prime is 80729371. The next prime is 80729387. The reversal of 80729376 is 67392708.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (80729371) 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 15 ways as a sum of consecutive naturals, for example, 4116 + ... + 13356.

It is an arithmetic number, because the mean of its divisors is an integer number (2717148).

Almost surely, 2^80729376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80729376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130423104).

80729376 is an abundant number, since it is smaller than the sum of its proper divisors (180116832).

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

80729376 is a wasteful number, since it uses less digits than its factorization.

80729376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9274 (or 9266 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 80729376 is about 8984.9527544668. The cubic root of 80729376 is about 432.1924725324.

The spelling of 80729376 in words is "eighty million, seven hundred twenty-nine thousand, three hundred seventy-six".