304090641 has 6 divisors (see below), whose sum is σ = 439242050. Its totient is φ = 202727088.

The previous prime is 304090639. The next prime is 304090663. The reversal of 304090641 is 146090403.

It can be written as a sum of positive squares in only one way, i.e., 266636241 + 37454400 = 16329^2 + 6120^2 .

It is not a de Polignac number, because 304090641 - 2¹ = 304090639 is a prime.

It is a super-2 number, since 2×304090641² = 184942235887581762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (304090601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16893916 + ... + 16893933.

Almost surely, 2^304090641 is an apocalyptic number.

It is an amenable number.

304090641 is a deficient number, since it is larger than the sum of its proper divisors (135151409).

304090641 is a wasteful number, since it uses less digits than its factorization.

304090641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33787855 (or 33787852 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 304090641 is about 17438.1948893800. The cubic root of 304090641 is about 672.4619020904.

The spelling of 304090641 in words is "three hundred four million, ninety thousand, six hundred forty-one".