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128230924 = 22192973797
BaseRepresentation
bin1111010010010…
…10011000001100
322221021210202111
413221022120030
5230311342144
620420233404
73114642043
oct751123014
9287253674
10128230924
1166423878
1236b3b864
13207494b3
141305d55a
15b3ce534
hex7a4a60c

128230924 has 48 divisors (see below), whose sum is σ = 248018400. Its totient is φ = 57770496.

The previous prime is 128230919. The next prime is 128231029. The reversal of 128230924 is 429032821.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160494 + ... + 161290.

It is an arithmetic number, because the mean of its divisors is an integer number (5167050).

Almost surely, 2128230924 is an apocalyptic number.

It is an amenable number.

128230924 is a deficient number, since it is larger than the sum of its proper divisors (119787476).

128230924 is a wasteful number, since it uses less digits than its factorization.

128230924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922 (or 920 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 128230924 is about 11323.9093956107. The cubic root of 128230924 is about 504.2713066445.

The spelling of 128230924 in words is "one hundred twenty-eight million, two hundred thirty thousand, nine hundred twenty-four".

Divisors: 1 2 4 19 29 38 58 73 76 116 146 292 551 797 1102 1387 1594 2117 2204 2774 3188 4234 5548 8468 15143 23113 30286 40223 46226 58181 60572 80446 92452 116362 160892 232724 439147 878294 1105439 1687249 1756588 2210878 3374498 4421756 6748996 32057731 64115462 128230924