75280028 has 12 divisors (see below), whose sum is σ = 135989952. Its totient is φ = 36425760.

The previous prime is 75280003. The next prime is 75280031. The reversal of 75280028 is 82008257.

It is a junction number, because it is equal to n+sod(n) for n = 75279976 and 75280003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303425 + ... + 303672.

It is an arithmetic number, because the mean of its divisors is an integer number (11332496).

Almost surely, 2^75280028 is an apocalyptic number.

It is an amenable number.

75280028 is a deficient number, since it is larger than the sum of its proper divisors (60709924).

75280028 is a wasteful number, since it uses less digits than its factorization.

75280028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607132 (or 607130 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 75280028 is about 8676.4063989650. The cubic root of 75280028 is about 422.2405358118.

The spelling of 75280028 in words is "seventy-five million, two hundred eighty thousand, twenty-eight".