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305130452 = 22117197673
BaseRepresentation
bin10010001011111…
…110101111010100
3210021011020021212
4102023332233110
51111103133302
650140000552
710363365104
oct2213765724
9707136255
10305130452
11147269030
1286230158
134b2a6083
142c74b204
151bbc4052
hex122febd4

305130452 has 24 divisors (see below), whose sum is σ = 590732352. Its totient is φ = 136740800.

The previous prime is 305130407. The next prime is 305130461. The reversal of 305130452 is 254031503.

305130452 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45713 + ... + 51960.

It is an arithmetic number, because the mean of its divisors is an integer number (24613848).

Almost surely, 2305130452 is an apocalyptic number.

It is an amenable number.

305130452 is a deficient number, since it is larger than the sum of its proper divisors (285601900).

305130452 is a wasteful number, since it uses less digits than its factorization.

305130452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97759 (or 97757 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 305130452 is about 17467.9836271964. The cubic root of 305130452 is about 673.2275047436.

Adding to 305130452 its reverse (254031503), we get a palindrome (559161955).

The spelling of 305130452 in words is "three hundred five million, one hundred thirty thousand, four hundred fifty-two".

Divisors: 1 2 4 11 22 44 71 142 284 781 1562 3124 97673 195346 390692 1074403 2148806 4297612 6934783 13869566 27739132 76282613 152565226 305130452