7990306 has 8 divisors (see below), whose sum is σ = 12690540. Its totient is φ = 3760128.

The previous prime is 7990291. The next prime is 7990319. The reversal of 7990306 is 6030997.

It can be written as a sum of positive squares in 2 ways, for example, as 7612081 + 378225 = 2759^2 + 615^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 235009 = 7990306 / (7 + 9 + 9 + 0 + 3 + 0 + 6).

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, 117471 + ... + 117538.

Almost surely, 2^7990306 is an apocalyptic number.

7990306 is a deficient number, since it is larger than the sum of its proper divisors (4700234).

7990306 is a wasteful number, since it uses less digits than its factorization.

7990306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235028.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 7990306 is about 2826.7129320113. The cubic root of 7990306 is about 199.9191840149.

The spelling of 7990306 in words is "seven million, nine hundred ninety thousand, three hundred six".