80725340 has 24 divisors (see below), whose sum is σ = 171274992. Its totient is φ = 31956480.

The previous prime is 80725339. The next prime is 80725349. The reversal of 80725340 is 4352708.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80725349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18866 + ... + 22745.

It is an arithmetic number, because the mean of its divisors is an integer number (7136458).

Almost surely, 2^80725340 is an apocalyptic number.

It is an amenable number.

80725340 is an abundant number, since it is smaller than the sum of its proper divisors (90549652).

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

80725340 is a wasteful number, since it uses less digits than its factorization.

80725340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41717 (or 41715 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 80725340 is about 8984.7281539288. The cubic root of 80725340 is about 432.1852700411.

The spelling of 80725340 in words is "eighty million, seven hundred twenty-five thousand, three hundred forty".