75403128 has 32 divisors (see below), whose sum is σ = 188744400. Its totient is φ = 25102848.

The previous prime is 75403127. The next prime is 75403147. The reversal of 75403128 is 82130457.

It is a junction number, because it is equal to n+sod(n) for n = 75403095 and 75403104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75403127) 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, 25200 + ... + 28032.

Almost surely, 2^75403128 is an apocalyptic number.

It is an amenable number.

75403128 is an abundant number, since it is smaller than the sum of its proper divisors (113341272).

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

75403128 is a wasteful number, since it uses less digits than its factorization.

75403128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3951 (or 3947 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 75403128 is about 8683.4974520639. The cubic root of 75403128 is about 422.4705636390.

The spelling of 75403128 in words is "seventy-five million, four hundred three thousand, one hundred twenty-eight".