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304425420 = 223513390289
BaseRepresentation
bin10010001001010…
…010100111001100
3210012211102011120
4102021102213030
51110413103140
650112520540
710354400445
oct2211224714
9705742146
10304425420
11146927362
1285b50150
134b0ba1b0
142c6062cc
151bad51d0
hex122529cc

304425420 has 48 divisors (see below), whose sum is σ = 917962080. Its totient is φ = 74935296.

The previous prime is 304425419. The next prime is 304425431. The reversal of 304425420 is 24524403.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194365 + ... + 195924.

It is an arithmetic number, because the mean of its divisors is an integer number (19124210).

Almost surely, 2304425420 is an apocalyptic number.

304425420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

304425420 is an abundant number, since it is smaller than the sum of its proper divisors (613536660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

304425420 is a wasteful number, since it uses less digits than its factorization.

304425420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390314 (or 390312 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 304425420 is about 17447.7912642260. The cubic root of 304425420 is about 672.7085868263.

Adding to 304425420 its reverse (24524403), we get a palindrome (328949823).

The spelling of 304425420 in words is "three hundred four million, four hundred twenty-five thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 13 15 20 26 30 39 52 60 65 78 130 156 195 260 390 780 390289 780578 1170867 1561156 1951445 2341734 3902890 4683468 5073757 5854335 7805780 10147514 11708670 15221271 20295028 23417340 25368785 30442542 50737570 60885084 76106355 101475140 152212710 304425420