Search a number
-
+
128874748 = 2232218687
BaseRepresentation
bin1111010111001…
…11100011111100
322222111111220211
413223213203330
5230442442443
620442122204
73123263062
oct753474374
9288444824
10128874748
1166823562
12371b0364
1320913562
141318a032
15b4aa19d
hex7ae78fc

128874748 has 6 divisors (see below), whose sum is σ = 225530816. Its totient is φ = 64437372.

The previous prime is 128874709. The next prime is 128874769. The reversal of 128874748 is 847478821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16109340 + ... + 16109347.

Almost surely, 2128874748 is an apocalyptic number.

It is an amenable number.

128874748 is a deficient number, since it is larger than the sum of its proper divisors (96656068).

128874748 is a wasteful number, since it uses less digits than its factorization.

128874748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32218691 (or 32218689 counting only the distinct ones).

The product of its digits is 802816, while the sum is 49.

The square root of 128874748 is about 11352.3014406771. The cubic root of 128874748 is about 505.1138494416.

The spelling of 128874748 in words is "one hundred twenty-eight million, eight hundred seventy-four thousand, seven hundred forty-eight".

Divisors: 1 2 4 32218687 64437374 128874748