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642282 = 23167641
BaseRepresentation
bin10011100110011101010
31012122001020
42130303222
5131023112
621433310
75313354
oct2346352
91178036
10642282
113a9613
1226b836
13196464
1412a0d4
15ca48c
hex9ccea

642282 has 16 divisors (see below), whose sum is σ = 1294272. Its totient is φ = 212480.

The previous prime is 642281. The next prime is 642359. The reversal of 642282 is 282246.

It is not an unprimeable number, because it can be changed into a prime (642281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682 + ... + 1322.

It is an arithmetic number, because the mean of its divisors is an integer number (80892).

2642282 is an apocalyptic number.

642282 is an abundant number, since it is smaller than the sum of its proper divisors (651990).

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

642282 is a wasteful number, since it uses less digits than its factorization.

642282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813.

The product of its digits is 1536, while the sum is 24.

The square root of 642282 is about 801.4249808934. The cubic root of 642282 is about 86.2796915209.

It can be divided in two parts, 64 and 2282, that added together give a triangular number (2346 = T68).

The spelling of 642282 in words is "six hundred forty-two thousand, two hundred eighty-two".