Search a number
-
+
128057048 = 2378327551
BaseRepresentation
bin1111010000111…
…11111011011000
322220221222020122
413220133323120
5230240311143
620412412412
73113316110
oct750377330
9286858218
10128057048
1166315179
1236a77108
13206b8302
1413016040
15b397c68
hex7a1fed8

128057048 has 32 divisors (see below), whose sum is σ = 277724160. Its totient is φ = 54218400.

The previous prime is 128057023. The next prime is 128057071. The reversal of 128057048 is 840750821.

It is a junction number, because it is equal to n+sod(n) for n = 128056999 and 128057017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9128 + ... + 18423.

It is an arithmetic number, because the mean of its divisors is an integer number (8678880).

Almost surely, 2128057048 is an apocalyptic number.

It is an amenable number.

128057048 is an abundant number, since it is smaller than the sum of its proper divisors (149667112).

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

128057048 is a wasteful number, since it uses less digits than its factorization.

128057048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27647 (or 27643 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 128057048 is about 11316.2294073600. The cubic root of 128057048 is about 504.0432796461.

The spelling of 128057048 in words is "one hundred twenty-eight million, fifty-seven thousand, forty-eight".

Divisors: 1 2 4 7 8 14 28 56 83 166 332 581 664 1162 2324 4648 27551 55102 110204 192857 220408 385714 771428 1542856 2286733 4573466 9146932 16007131 18293864 32014262 64028524 128057048