75082428 has 18 divisors (see below), whose sum is σ = 189791784. Its totient is φ = 25027464.

The previous prime is 75082417. The next prime is 75082463. The reversal of 75082428 is 82428057.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2085623 = 75082428 / (7 + 5 + 0 + 8 + 2 + 4 + 2 + 8).

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 75082392 and 75082401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1042776 + ... + 1042847.

It is an arithmetic number, because the mean of its divisors is an integer number (10543988).

Almost surely, 2^75082428 is an apocalyptic number.

It is an amenable number.

75082428 is an abundant number, since it is smaller than the sum of its proper divisors (114709356).

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

75082428 is a wasteful number, since it uses less digits than its factorization.

75082428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085633 (or 2085628 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 75082428 is about 8665.0117137832. The cubic root of 75082428 is about 421.8707704597.

The spelling of 75082428 in words is "seventy-five million, eighty-two thousand, four hundred twenty-eight".