Search a number
-
+
30887058975 = 3521932133821
BaseRepresentation
bin11100110001000000…
…110001111000011111
32221201120110011112020
4130301000301320133
51001224041341400
622104520511223
72142260445423
oct346100617037
987646404466
1030887058975
111210aa37623
125ba001b513
132bb30aa376
1416d0196b83
15c0b94b2a0
hex731031e1f

30887058975 has 24 divisors (see below), whose sum is σ = 51331222032. Its totient is φ = 16387737600.

The previous prime is 30887058973. The next prime is 30887059009. The reversal of 30887058975 is 57985078803.

It is not a de Polignac number, because 30887058975 - 21 = 30887058973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30887058973) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1052436 + ... + 1081385.

It is an arithmetic number, because the mean of its divisors is an integer number (2138800918).

Almost surely, 230887058975 is an apocalyptic number.

30887058975 is a deficient number, since it is larger than the sum of its proper divisors (20444163057).

30887058975 is a wasteful number, since it uses less digits than its factorization.

30887058975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134027 (or 2134022 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 60.

The spelling of 30887058975 in words is "thirty billion, eight hundred eighty-seven million, fifty-eight thousand, nine hundred seventy-five".

Divisors: 1 3 5 15 25 75 193 579 965 2895 4825 14475 2133821 6401463 10669105 32007315 53345525 160036575 411827453 1235482359 2059137265 6177411795 10295686325 30887058975