75290330 has 8 divisors (see below), whose sum is σ = 135522612. Its totient is φ = 30116128.

The previous prime is 75290321. The next prime is 75290357. The reversal of 75290330 is 3309257.

It is a Cunningham number, because it is equal to 8677²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 75290329 + 1 = 8677^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 75290293 and 75290302.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3764507 + ... + 3764526.

Almost surely, 2^75290330 is an apocalyptic number.

75290330 is a deficient number, since it is larger than the sum of its proper divisors (60232282).

75290330 is a wasteful number, since it uses less digits than its factorization.

75290330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7529040.

The product of its (nonzero) digits is 5670, while the sum is 29.

The square root of 75290330 is about 8677.0000576236. Note that the first 4 decimals coincide. The cubic root of 75290330 is about 422.2597960047.

Adding to 75290330 its reverse (3309257), we get a palindrome (78599587).

The spelling of 75290330 in words is "seventy-five million, two hundred ninety thousand, three hundred thirty".