80752240 has 40 divisors (see below), whose sum is σ = 194228640. Its totient is φ = 31186176.

The previous prime is 80752229. The next prime is 80752253. The reversal of 80752240 is 4225708.

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 = 80752199 and 80752208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15084 + ... + 19723.

It is an arithmetic number, because the mean of its divisors is an integer number (4855716).

Almost surely, 2^80752240 is an apocalyptic number.

80752240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80752240 is an abundant number, since it is smaller than the sum of its proper divisors (113476400).

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

80752240 is a wasteful number, since it uses less digits than its factorization.

80752240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34849 (or 34843 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 80752240 is about 8986.2250138754. The cubic root of 80752240 is about 432.2332702215.

Adding to 80752240 its reverse (4225708), we get a palindrome (84977948).

The spelling of 80752240 in words is "eighty million, seven hundred fifty-two thousand, two hundred forty".