304256641 has 4 divisors (see below), whose sum is σ = 327661012. Its totient is φ = 280852272.

The previous prime is 304256621. The next prime is 304256651. The reversal of 304256641 is 146652403.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49056016 + 255200625 = 7004^2 + 15975^2 .

It is a cyclic number.

It is not a de Polignac number, because 304256641 - 2⁵ = 304256609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (304256611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11702166 + ... + 11702191.

It is an arithmetic number, because the mean of its divisors is an integer number (81915253).

Almost surely, 2^304256641 is an apocalyptic number.

It is an amenable number.

304256641 is a deficient number, since it is larger than the sum of its proper divisors (23404371).

304256641 is a wasteful number, since it uses less digits than its factorization.

304256641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23404370.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 304256641 is about 17442.9539069505. The cubic root of 304256641 is about 672.5842432112.

The spelling of 304256641 in words is "three hundred four million, two hundred fifty-six thousand, six hundred forty-one".