305630349 has 8 divisors (see below), whose sum is σ = 413589600. Its totient is φ = 200712336.

The previous prime is 305630321. The next prime is 305630357. The reversal of 305630349 is 943036503.

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

It is not a de Polignac number, because 305630349 - 2⁵ = 305630317 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305630389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 760074 + ... + 760475.

It is an arithmetic number, because the mean of its divisors is an integer number (51698700).

Almost surely, 2^305630349 is an apocalyptic number.

It is an amenable number.

305630349 is a deficient number, since it is larger than the sum of its proper divisors (107959251).

305630349 is a wasteful number, since it uses less digits than its factorization.

305630349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520619.

The product of its (nonzero) digits is 29160, while the sum is 33.

The square root of 305630349 is about 17482.2867211358. The cubic root of 305630349 is about 673.5949550011.

The spelling of 305630349 in words is "three hundred five million, six hundred thirty thousand, three hundred forty-nine".