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128057154 = 2382325933
BaseRepresentation
bin1111010000111…
…11111101000010
322220221222101120
413220133331002
5230240312104
620412413110
73113316321
oct750377502
9286858346
10128057154
1166315265
1236a77196
13206b8384
14130160b8
15b397cd9
hex7a1ff42

128057154 has 16 divisors (see below), whose sum is σ = 256435392. Its totient is φ = 42632208.

The previous prime is 128057147. The next prime is 128057159. The reversal of 128057154 is 451750821.

It is not an unprimeable number, because it can be changed into a prime (128057159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8029 + ... + 17904.

It is an arithmetic number, because the mean of its divisors is an integer number (16027212).

Almost surely, 2128057154 is an apocalyptic number.

128057154 is an abundant number, since it is smaller than the sum of its proper divisors (128378238).

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

128057154 is a wasteful number, since it uses less digits than its factorization.

128057154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26761.

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 128057154 is about 11316.2340908979. The cubic root of 128057154 is about 504.0434187210.

The spelling of 128057154 in words is "one hundred twenty-eight million, fifty-seven thousand, one hundred fifty-four".

Divisors: 1 2 3 6 823 1646 2469 4938 25933 51866 77799 155598 21342859 42685718 64028577 128057154