304400145 has 64 divisors (see below), whose sum is σ = 570138624. Its totient is φ = 135820800.

The previous prime is 304400143. The next prime is 304400149. The reversal of 304400145 is 541004403.

It is not a de Polignac number, because 304400145 - 2¹ = 304400143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (304400141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1157284 + ... + 1157546.

It is an arithmetic number, because the mean of its divisors is an integer number (8908416).

Almost surely, 2^304400145 is an apocalyptic number.

304400145 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

304400145 is a deficient number, since it is larger than the sum of its proper divisors (265738479).

304400145 is a wasteful number, since it uses less digits than its factorization.

304400145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 304400145 is about 17447.0669454783. The cubic root of 304400145 is about 672.6899690423.

Adding to 304400145 its reverse (541004403), we get a palindrome (845404548).

The spelling of 304400145 in words is "three hundred four million, four hundred thousand, one hundred forty-five".