75478340 has 48 divisors (see below), whose sum is σ = 181706112. Its totient is φ = 25798656.

The previous prime is 75478339. The next prime is 75478363. The reversal of 75478340 is 4387457.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 75478294 and 75478303.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61412 + ... + 62628.

It is an arithmetic number, because the mean of its divisors is an integer number (3785544).

Almost surely, 2^75478340 is an apocalyptic number.

75478340 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

75478340 is an abundant number, since it is smaller than the sum of its proper divisors (106227772).

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

75478340 is a wasteful number, since it uses less digits than its factorization.

75478340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676 (or 1674 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 75478340 is about 8687.8271161436. The cubic root of 75478340 is about 422.6109835303.

The spelling of 75478340 in words is "seventy-five million, four hundred seventy-eight thousand, three hundred forty".