75682440 has 48 divisors (see below), whose sum is σ = 245969100. Its totient is φ = 20181888.

The previous prime is 75682423. The next prime is 75682447. The reversal of 75682440 is 4428657.

It can be written as a sum of positive squares in 2 ways, for example, as 64352484 + 11329956 = 8022^2 + 3366^2 .

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 = 75682395 and 75682404.

It is not an unprimeable number, because it can be changed into a prime (75682447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104755 + ... + 105474.

Almost surely, 2^75682440 is an apocalyptic number.

It is an amenable number.

75682440 is an abundant number, since it is smaller than the sum of its proper divisors (170286660).

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

75682440 is a wasteful number, since it uses less digits than its factorization.

75682440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210246 (or 210239 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 75682440 is about 8699.5655063917. The cubic root of 75682440 is about 422.9915663191.

The spelling of 75682440 in words is "seventy-five million, six hundred eighty-two thousand, four hundred forty".