305002990 has 8 divisors (see below), whose sum is σ = 549005400. Its totient is φ = 122001192.

The previous prime is 305002949. The next prime is 305003009. The reversal of 305002990 is 99200503.

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

It is a congruent number.

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, 15250140 + ... + 15250159.

It is an arithmetic number, because the mean of its divisors is an integer number (68625675).

Almost surely, 2^305002990 is an apocalyptic number.

305002990 is a deficient number, since it is larger than the sum of its proper divisors (244002410).

305002990 is a wasteful number, since it uses less digits than its factorization.

305002990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30500306.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 305002990 is about 17464.3347998142. The cubic root of 305002990 is about 673.1337493514.

The spelling of 305002990 in words is "three hundred five million, two thousand, nine hundred ninety".