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142815890886 = 23171400155793
BaseRepresentation
bin1000010100000001111…
…1011000110111000110
3111122122002021221212020
42011000133120313012
54314441332002021
6145335252104010
713214053020504
oct2050037306706
9448562257766
10142815890886
1155627935699
1223818905006
1310610094216
146cab5cb674
153aad0497c6
hex21407d8dc6

142815890886 has 16 divisors (see below), whose sum is σ = 302433651504. Its totient is φ = 44804985344.

The previous prime is 142815890843. The next prime is 142815890909. The reversal of 142815890886 is 688098518241.

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, 700077795 + ... + 700077998.

It is an arithmetic number, because the mean of its divisors is an integer number (18902103219).

Almost surely, 2142815890886 is an apocalyptic number.

142815890886 is an abundant number, since it is smaller than the sum of its proper divisors (159617760618).

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

142815890886 is a wasteful number, since it uses less digits than its factorization.

142815890886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400155815.

The product of its (nonzero) digits is 8847360, while the sum is 60.

The spelling of 142815890886 in words is "one hundred forty-two billion, eight hundred fifteen million, eight hundred ninety thousand, eight hundred eighty-six".

Divisors: 1 2 3 6 17 34 51 102 1400155793 2800311586 4200467379 8400934758 23802648481 47605296962 71407945443 142815890886