Search a number
-
+
128849848 = 2317879013
BaseRepresentation
bin1111010111000…
…01011110111000
322222110020202121
413223201132320
5230441143343
620441411024
73123130351
oct753413670
9288406677
10128849848
1166806886
1237199a74
132090511a
1413180d28
15b4a2aed
hex7ae17b8

128849848 has 16 divisors (see below), whose sum is σ = 241755480. Its totient is φ = 64381728.

The previous prime is 128849843. The next prime is 128849863. The reversal of 128849848 is 848948821.

It is a junction number, because it is equal to n+sod(n) for n = 128849795 and 128849804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128849843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9790 + ... + 18802.

Almost surely, 2128849848 is an apocalyptic number.

It is an amenable number.

128849848 is a deficient number, since it is larger than the sum of its proper divisors (112905632).

128849848 is a wasteful number, since it uses less digits than its factorization.

128849848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10806 (or 10802 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 52.

The square root of 128849848 is about 11351.2046937759. The cubic root of 128849848 is about 505.0813161870.

The spelling of 128849848 in words is "one hundred twenty-eight million, eight hundred forty-nine thousand, eight hundred forty-eight".

Divisors: 1 2 4 8 1787 3574 7148 9013 14296 18026 36052 72104 16106231 32212462 64424924 128849848