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128057052 = 22310671421
BaseRepresentation
bin1111010000111…
…11111011011100
322220221222020210
413220133323130
5230240311202
620412412420
73113316114
oct750377334
9286858223
10128057052
1166315182
1236a77110
13206b8306
1413016044
15b397c6c
hex7a1fedc

128057052 has 12 divisors (see below), whose sum is σ = 298799816. Its totient is φ = 42685680.

The previous prime is 128057023. The next prime is 128057071. The reversal of 128057052 is 250750821.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5335699 + ... + 5335722.

Almost surely, 2128057052 is an apocalyptic number.

128057052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128057052 is an abundant number, since it is smaller than the sum of its proper divisors (170742764).

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

128057052 is a wasteful number, since it uses less digits than its factorization.

128057052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10671428 (or 10671426 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 128057052 is about 11316.2295840973. The cubic root of 128057052 is about 504.0432848942.

The spelling of 128057052 in words is "one hundred twenty-eight million, fifty-seven thousand, fifty-two".

Divisors: 1 2 3 4 6 12 10671421 21342842 32014263 42685684 64028526 128057052