304728487 has 16 divisors (see below), whose sum is σ = 359856640. Its totient is φ = 252618912.

The previous prime is 304728469. The next prime is 304728509. The reversal of 304728487 is 784827403.

It is not a de Polignac number, because 304728487 - 2¹¹ = 304726439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304728427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26089 + ... + 35917.

It is an arithmetic number, because the mean of its divisors is an integer number (22491040).

Almost surely, 2^304728487 is an apocalyptic number.

304728487 is the 10079-th hex number.

304728487 is a deficient number, since it is larger than the sum of its proper divisors (55128153).

304728487 is a wasteful number, since it uses less digits than its factorization.

304728487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9982.

The product of its (nonzero) digits is 301056, while the sum is 43.

The square root of 304728487 is about 17456.4740712436. The cubic root of 304728487 is about 672.9317483868.

The spelling of 304728487 in words is "three hundred four million, seven hundred twenty-eight thousand, four hundred eighty-seven".