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142808950 = 25210128279
BaseRepresentation
bin10001000001100…
…01011101110110
3100221201110001101
420200301131312
5243024341300
622100520314
73352566424
oct1040613566
9327643041
10142808950
1173680529
123b9b009a
1323781a4b
1414d76114
15c80db6a
hex8831776

142808950 has 24 divisors (see below), whose sum is σ = 268264080. Its totient is φ = 56556000.

The previous prime is 142808947. The next prime is 142808987. The reversal of 142808950 is 59808241.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9090 + ... + 19189.

It is an arithmetic number, because the mean of its divisors is an integer number (11177670).

Almost surely, 2142808950 is an apocalyptic number.

142808950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142808950 is a deficient number, since it is larger than the sum of its proper divisors (125455130).

142808950 is a wasteful number, since it uses less digits than its factorization.

142808950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28392 (or 28387 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 142808950 is about 11950.2698714297. The cubic root of 142808950 is about 522.6991678308.

The spelling of 142808950 in words is "one hundred forty-two million, eight hundred eight thousand, nine hundred fifty".

Divisors: 1 2 5 10 25 50 101 202 505 1010 2525 5050 28279 56558 141395 282790 706975 1413950 2856179 5712358 14280895 28561790 71404475 142808950