80741840 has 40 divisors (see below), whose sum is σ = 198770760. Its totient is φ = 30396416.

The previous prime is 80741827. The next prime is 80741851. The reversal of 80741840 is 4814708.

It can be written as a sum of positive squares in 4 ways, for example, as 2383936 + 78357904 = 1544^2 + 8852^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 80741797 and 80741806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28325 + ... + 31044.

It is an arithmetic number, because the mean of its divisors is an integer number (4969269).

Almost surely, 2^80741840 is an apocalyptic number.

80741840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80741840 is an abundant number, since it is smaller than the sum of its proper divisors (118028920).

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

80741840 is a wasteful number, since it uses less digits than its factorization.

80741840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59399 (or 59393 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 80741840 is about 8985.6463317894. The cubic root of 80741840 is about 432.2147137951.

The spelling of 80741840 in words is "eighty million, seven hundred forty-one thousand, eight hundred forty".