Search a number
-
+
2128575357 = 321087217579
BaseRepresentation
bin111111011011111…
…0111101101111101
312111100021211110100
41332313313231331
513324403402412
6551114431313
7103514410026
oct17667675575
95440254410
102128575357
119a2586197
124b4a32539
1327bcb455c
141629a7c4d
15c6d0dedc
hex7edf7b7d

2128575357 has 12 divisors (see below), whose sum is σ = 3077451520. Its totient is φ = 1417738248.

The previous prime is 2128575341. The next prime is 2128575373. The reversal of 2128575357 is 7535758212.

2128575357 is a `hidden beast` number, since 2 + 1 + 28 + 575 + 3 + 57 = 666.

It is an interprime number because it is at equal distance from previous prime (2128575341) and next prime (2128575373).

It is not a de Polignac number, because 2128575357 - 24 = 2128575341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128575307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99007 + ... + 118572.

Almost surely, 22128575357 is an apocalyptic number.

It is an amenable number.

2128575357 is a deficient number, since it is larger than the sum of its proper divisors (948876163).

2128575357 is a wasteful number, since it uses less digits than its factorization.

2128575357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218672 (or 218669 counting only the distinct ones).

The product of its digits is 588000, while the sum is 45.

The square root of 2128575357 is about 46136.4861795954. The cubic root of 2128575357 is about 1286.3614305058.

The spelling of 2128575357 in words is "two billion, one hundred twenty-eight million, five hundred seventy-five thousand, three hundred fifty-seven".

Divisors: 1 3 9 1087 3261 9783 217579 652737 1958211 236508373 709525119 2128575357