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428280159 = 31931242377
BaseRepresentation
bin11001100001110…
…000100101011111
31002211212212221010
4121201300211133
51334114431114
6110255310303
713420215126
oct3141604537
91084785833
10428280159
111aa83124a
12bb51b393
136a963818
1440c46abd
15278ecc59
hex1987095f

428280159 has 16 divisors (see below), whose sum is σ = 620487680. Its totient is φ = 261766080.

The previous prime is 428280119. The next prime is 428280161. The reversal of 428280159 is 951082824.

It is not a de Polignac number, because 428280159 - 29 = 428279647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428280119) 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, 119422 + ... + 122955.

It is an arithmetic number, because the mean of its divisors is an integer number (38780480).

Almost surely, 2428280159 is an apocalyptic number.

428280159 is a deficient number, since it is larger than the sum of its proper divisors (192207521).

428280159 is a wasteful number, since it uses less digits than its factorization.

428280159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242430.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 428280159 is about 20694.9307561055. The cubic root of 428280159 is about 753.7766009055.

The spelling of 428280159 in words is "four hundred twenty-eight million, two hundred eighty thousand, one hundred fifty-nine".

Divisors: 1 3 19 31 57 93 589 1767 242377 727131 4605163 7513687 13815489 22541061 142760053 428280159