304089428 has 6 divisors (see below), whose sum is σ = 532156506. Its totient is φ = 152044712.

The previous prime is 304089403. The next prime is 304089439. The reversal of 304089428 is 824980403.

It can be written as a sum of positive squares in only one way, i.e., 301439044 + 2650384 = 17362^2 + 1628^2 .

It is a junction number, because it is equal to n+sod(n) for n = 304089391 and 304089400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38011175 + ... + 38011182.

It is an arithmetic number, because the mean of its divisors is an integer number (88692751).

Almost surely, 2^304089428 is an apocalyptic number.

It is an amenable number.

304089428 is a deficient number, since it is larger than the sum of its proper divisors (228067078).

304089428 is a wasteful number, since it uses less digits than its factorization.

304089428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76022361 (or 76022359 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 304089428 is about 17438.1601093693. The cubic root of 304089428 is about 672.4610079519.

The spelling of 304089428 in words is "three hundred four million, eighty-nine thousand, four hundred twenty-eight".