80547840 has 312 divisors, whose sum is σ = 306671040. Its totient is φ = 19464192.

The previous prime is 80547811. The next prime is 80547851. The reversal of 80547840 is 4874508.

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

It is a junction number, because it is equal to n+sod(n) for n = 80547795 and 80547804.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3502069 + ... + 3502091.

It is an arithmetic number, because the mean of its divisors is an integer number (982920).

Almost surely, 2^80547840 is an apocalyptic number.

80547840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80547840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153335520).

80547840 is an abundant number, since it is smaller than the sum of its proper divisors (226123200).

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

80547840 is a wasteful number, since it uses less digits than its factorization.

80547840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77 (or 52 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 80547840 is about 8974.8448454555. The cubic root of 80547840 is about 431.8682725944.

The spelling of 80547840 in words is "eighty million, five hundred forty-seven thousand, eight hundred forty".