75430530 has 96 divisors (see below), whose sum is σ = 237354624. Its totient is φ = 16224768.

The previous prime is 75430517. The next prime is 75430549. The reversal of 75430530 is 3503457.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 75430494 and 75430503.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7189 + ... + 14231.

It is an arithmetic number, because the mean of its divisors is an integer number (2472444).

Almost surely, 2^75430530 is an apocalyptic number.

75430530 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 75430530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118677312).

75430530 is an abundant number, since it is smaller than the sum of its proper divisors (161924094).

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

75430530 is a wasteful number, since it uses less digits than its factorization.

75430530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7080 (or 7077 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 27.

The square root of 75430530 is about 8685.0751292087. The cubic root of 75430530 is about 422.5217336485.

Adding to 75430530 its reverse (3503457), we get a palindrome (78933987).

The spelling of 75430530 in words is "seventy-five million, four hundred thirty thousand, five hundred thirty".