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128040192 = 2832717467
BaseRepresentation
bin1111010000110…
…11110100000000
322220221010010100
413220123310000
5230234241232
620412202400
73113216010
oct750336400
9286833110
10128040192
1166303545
1236a69400
13206b0737
141300dc40
15b392c7c
hex7a1bd00

128040192 has 216 divisors, whose sum is σ = 447685056. Its totient is φ = 34357248.

The previous prime is 128040181. The next prime is 128040217. The reversal of 128040192 is 291040821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 273943 + ... + 274409.

It is an arithmetic number, because the mean of its divisors is an integer number (2072616).

Almost surely, 2128040192 is an apocalyptic number.

128040192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128040192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223842528).

128040192 is an abundant number, since it is smaller than the sum of its proper divisors (319644864).

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

128040192 is a wasteful number, since it uses less digits than its factorization.

128040192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 496 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 128040192 is about 11315.4846118052. The cubic root of 128040192 is about 504.0211631325.

The spelling of 128040192 in words is "one hundred twenty-eight million, forty thousand, one hundred ninety-two".