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28941142 = 2197310433
BaseRepresentation
bin110111001100…
…1101101010110
32000110100210011
41232121231112
524402104032
62512150434
7500665336
oct156315526
960410704
1028941142
11153779aa
12983841a
135cc4049
143bb50c6
15281a247
hex1b99b56

28941142 has 16 divisors (see below), whose sum is σ = 46326960. Its totient is φ = 13519872.

The previous prime is 28941103. The next prime is 28941169. The reversal of 28941142 is 24114982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2443 + ... + 7990.

It is an arithmetic number, because the mean of its divisors is an integer number (2895435).

Almost surely, 228941142 is an apocalyptic number.

28941142 is a deficient number, since it is larger than the sum of its proper divisors (17385818).

28941142 is a wasteful number, since it uses less digits than its factorization.

28941142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10527.

The product of its digits is 4608, while the sum is 31.

The square root of 28941142 is about 5379.6972033749. The cubic root of 28941142 is about 307.0236907308.

The spelling of 28941142 in words is "twenty-eight million, nine hundred forty-one thousand, one hundred forty-two".

Divisors: 1 2 19 38 73 146 1387 2774 10433 20866 198227 396454 761609 1523218 14470571 28941142