75403428 has 24 divisors (see below), whose sum is σ = 180233760. Its totient is φ = 24521280.

The previous prime is 75403423. The next prime is 75403429. The reversal of 75403428 is 82430457.

It is not an unprimeable number, because it can be changed into a prime (75403423) 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, 76138 + ... + 77121.

It is an arithmetic number, because the mean of its divisors is an integer number (7509740).

Almost surely, 2^75403428 is an apocalyptic number.

It is an amenable number.

75403428 is an abundant number, since it is smaller than the sum of its proper divisors (104830332).

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

75403428 is a wasteful number, since it uses less digits than its factorization.

75403428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153307 (or 153305 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 75403428 is about 8683.5147261924. The cubic root of 75403428 is about 422.4711239208.

The spelling of 75403428 in words is "seventy-five million, four hundred three thousand, four hundred twenty-eight".