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428018302 = 23143181887
BaseRepresentation
bin11001100000110…
…000101001111110
31002211101120201201
4121200300221332
51334033041202
6110245530114
713415044525
oct3140605176
91084346651
10428018302
111aa672538
12bb41393a
136a8a158a
1440bb94bc
152789a387
hex19830a7e

428018302 has 32 divisors (see below), whose sum is σ = 682665984. Its totient is φ = 200944800.

The previous prime is 428018281. The next prime is 428018309. The reversal of 428018302 is 203810824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428018309) 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, 482103 + ... + 482989.

It is an arithmetic number, because the mean of its divisors is an integer number (21333312).

Almost surely, 2428018302 is an apocalyptic number.

428018302 is a deficient number, since it is larger than the sum of its proper divisors (254647682).

428018302 is a wasteful number, since it uses less digits than its factorization.

428018302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 428018302 is about 20688.6031911292. The cubic root of 428018302 is about 753.6229460947.

The spelling of 428018302 in words is "four hundred twenty-eight million, eighteen thousand, three hundred two".

Divisors: 1 2 31 43 62 86 181 362 887 1333 1774 2666 5611 7783 11222 15566 27497 38141 54994 76282 160547 241273 321094 482546 1182371 2364742 4976957 6903521 9953914 13807042 214009151 428018302