75508290 has 96 divisors (see below), whose sum is σ = 230682816. Its totient is φ = 16894080.

The previous prime is 75508289. The next prime is 75508291. The reversal of 75508290 is 9280557.

It is an interprime number because it is at equal distance from previous prime (75508289) and next prime (75508291).

It is not an unprimeable number, because it can be changed into a prime (75508291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9937 + ... + 15803.

It is an arithmetic number, because the mean of its divisors is an integer number (2402946).

Almost surely, 2^75508290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75508290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115341408).

75508290 is an abundant number, since it is smaller than the sum of its proper divisors (155174526).

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

75508290 is a wasteful number, since it uses less digits than its factorization.

75508290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5904 (or 5901 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 75508290 is about 8689.5506212922. The cubic root of 75508290 is about 422.6668738479. Note that the first 3 decimals are identical.

The spelling of 75508290 in words is "seventy-five million, five hundred eight thousand, two hundred ninety".