304228961 has 4 divisors (see below), whose sum is σ = 304277424. Its totient is φ = 304180500.

The previous prime is 304228949. The next prime is 304228973. The reversal of 304228961 is 169822403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (304228949) and next prime (304228973).

It is a cyclic number.

It is not a de Polignac number, because 304228961 - 2¹⁴ = 304212577 is a prime.

It is a super-2 number, since 2×304228961² = 185110521422279042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (304228861) 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, 13115 + ... + 27936.

It is an arithmetic number, because the mean of its divisors is an integer number (76069356).

Almost surely, 2^304228961 is an apocalyptic number.

It is an amenable number.

304228961 is a deficient number, since it is larger than the sum of its proper divisors (48463).

304228961 is an equidigital number, since it uses as much as digits as its factorization.

304228961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48462.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 304228961 is about 17442.1604453118. The cubic root of 304228961 is about 672.5638462897.

The spelling of 304228961 in words is "three hundred four million, two hundred twenty-eight thousand, nine hundred sixty-one".