Search a number
-
+
128039048 = 2382319447
BaseRepresentation
bin1111010000110…
…11100010001000
322220221001112222
413220123202020
5230234222143
620412153212
73113212454
oct750334210
9286831488
10128039048
11663026a5
1236a68808
13206b0067
141300d664
15b392768
hex7a1b888

128039048 has 16 divisors (see below), whose sum is σ = 240377280. Its totient is φ = 63938448.

The previous prime is 128039039. The next prime is 128039059. The reversal of 128039048 is 840930821.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 128038999 and 128039017.

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, 3140 + ... + 16307.

It is an arithmetic number, because the mean of its divisors is an integer number (15023580).

Almost surely, 2128039048 is an apocalyptic number.

It is an amenable number.

128039048 is a deficient number, since it is larger than the sum of its proper divisors (112338232).

128039048 is a wasteful number, since it uses less digits than its factorization.

128039048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20276 (or 20272 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 128039048 is about 11315.4340614932. The cubic root of 128039048 is about 504.0196620363.

Adding to 128039048 its reverse (840930821), we get a palindrome (968969869).

The spelling of 128039048 in words is "one hundred twenty-eight million, thirty-nine thousand, forty-eight".

Divisors: 1 2 4 8 823 1646 3292 6584 19447 38894 77788 155576 16004881 32009762 64019524 128039048