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304328025 = 325211632
BaseRepresentation
bin10010001000111…
…010110101011001
3210012122110120100
4102020322311121
51110401444100
650110450013
710353513501
oct2210726531
9705573510
10304328025
11146870171
1285b03909
134b084a71
142c5bca01
151bab6400
hex1223ad59

304328025 has 27 divisors (see below), whose sum is σ = 545554399. Its totient is φ = 162168720.

The previous prime is 304327993. The next prime is 304328027. The reversal of 304328025 is 520823403.

The square root of 304328025 is 17445.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 109558089 + 194769936 = 10467^2 + 13956^2 .

It is not a de Polignac number, because 304328025 - 25 = 304327993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 304328025.

It is not an unprimeable number, because it can be changed into a prime (304328027) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 261094 + ... + 262256.

Almost surely, 2304328025 is an apocalyptic number.

304328025 is the 17445-th square number.

304328025 is the 8723-rd centered octagonal number.

It is an amenable number.

304328025 is a deficient number, since it is larger than the sum of its proper divisors (241226374).

304328025 is an equidigital number, since it uses as much as digits as its factorization.

304328025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2342 (or 1171 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The cubic root of 304328025 is about 672.6368391591.

It can be divided in two parts, 304 and 328025, that added together give a square (328329 = 5732).

The spelling of 304328025 in words is "three hundred four million, three hundred twenty-eight thousand, twenty-five".

Divisors: 1 3 5 9 15 25 45 75 225 1163 3489 5815 10467 17445 29075 52335 87225 261675 1352569 4057707 6762845 12173121 20288535 33814225 60865605 101442675 304328025