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128798352 = 24322773229
BaseRepresentation
bin1111010110101…
…00111010010000
322222100122010100
413223110322100
5230433021402
620440332400
73122524254
oct753247220
9288318110
10128798352
1166781121
1237174100
13208b7857
141316a264
15b49271c
hex7ad4e90

128798352 has 60 divisors (see below), whose sum is σ = 361869820. Its totient is φ = 42764544.

The previous prime is 128798323. The next prime is 128798363. The reversal of 128798352 is 253897821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30074256 + 98724096 = 5484^2 + 9936^2 .

It is a junction number, because it is equal to n+sod(n) for n = 128798298 and 128798307.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38274 + ... + 41502.

Almost surely, 2128798352 is an apocalyptic number.

128798352 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 128798352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180934910).

128798352 is an abundant number, since it is smaller than the sum of its proper divisors (233071468).

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

128798352 is a wasteful number, since it uses less digits than its factorization.

128798352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3520 (or 3511 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 128798352 is about 11348.9361615968. The cubic root of 128798352 is about 505.0140204584.

The spelling of 128798352 in words is "one hundred twenty-eight million, seven hundred ninety-eight thousand, three hundred fifty-two".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 36 48 72 144 277 554 831 1108 1662 2216 2493 3229 3324 4432 4986 6458 6648 9687 9972 12916 13296 19374 19944 25832 29061 38748 39888 51664 58122 77496 116244 154992 232488 464976 894433 1788866 2683299 3577732 5366598 7155464 8049897 10733196 14310928 16099794 21466392 32199588 42932784 64399176 128798352