75030162728 has 32 divisors (see below), whose sum is σ = 149607469800. Its totient is φ = 35154112512.

The previous prime is 75030162721. The next prime is 75030162743. The reversal of 75030162728 is 82726103057.

It can be written as a sum of positive squares in 4 ways, for example, as 66955702564 + 8074460164 = 258758^2 + 89858^2 .

It is not an unprimeable number, because it can be changed into a prime (75030162721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1173425 + ... + 1235712.

Almost surely, 2^75030162728 is an apocalyptic number.

It is an amenable number.

75030162728 is a deficient number, since it is larger than the sum of its proper divisors (74577307072).

75030162728 is a wasteful number, since it uses less digits than its factorization.

75030162728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409389 (or 2409385 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 75030162728 in words is "seventy-five billion, thirty million, one hundred sixty-two thousand, seven hundred twenty-eight".