Search a number
-
+
30850002945 = 3252923639849
BaseRepresentation
bin11100101110110011…
…011011000000000001
32221121222201112012200
4130232303123000001
51001140100043240
622101114343413
72141330461356
oct345663330001
987558645180
1030850002945
11120a1027903
125b8b72ab69
132ba8504818
1416c92ac62d
15c0857b930
hex72ecdb001

30850002945 has 24 divisors (see below), whose sum is σ = 55317249000. Its totient is φ = 15885977856.

The previous prime is 30850002929. The next prime is 30850002949. The reversal of 30850002945 is 54920005803.

It can be written as a sum of positive squares in 4 ways, for example, as 242064 + 30849760881 = 492^2 + 175641^2 .

It is not a de Polignac number, because 30850002945 - 24 = 30850002929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30850002949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11818620 + ... + 11821229.

It is an arithmetic number, because the mean of its divisors is an integer number (2304885375).

Almost surely, 230850002945 is an apocalyptic number.

It is an amenable number.

30850002945 is a deficient number, since it is larger than the sum of its proper divisors (24467246055).

30850002945 is a wasteful number, since it uses less digits than its factorization.

30850002945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23639889 (or 23639886 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 30850002945 in words is "thirty billion, eight hundred fifty million, two thousand, nine hundred forty-five".

Divisors: 1 3 5 9 15 29 45 87 145 261 435 1305 23639849 70919547 118199245 212758641 354597735 685555621 1063793205 2056666863 3427778105 6170000589 10283334315 30850002945