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30570062120 = 2351358788581
BaseRepresentation
bin11100011110000111…
…100010000100101000
32220220110222001120222
4130132013202010220
51000101413441440
622013234305212
72131361145353
oct343607420450
986813861528
1030570062120
1111a68004154
125b11a28208
132b6250b070
1416a003b29a
15bddbd12b5
hex71e1e2128

30570062120 has 32 divisors (see below), whose sum is σ = 74073613320. Its totient is φ = 11287407360.

The previous prime is 30570062113. The next prime is 30570062191. The reversal of 30570062120 is 2126007503.

It can be written as a sum of positive squares in 4 ways, for example, as 28150799524 + 2419262596 = 167782^2 + 49186^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 30570062120.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29393771 + ... + 29394810.

Almost surely, 230570062120 is an apocalyptic number.

It is an amenable number.

30570062120 is an abundant number, since it is smaller than the sum of its proper divisors (43503551200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30570062120 is a wasteful number, since it uses less digits than its factorization.

30570062120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58788605 (or 58788601 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

Adding to 30570062120 its reverse (2126007503), we get a palindrome (32696069623).

The spelling of 30570062120 in words is "thirty billion, five hundred seventy million, sixty-two thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 13 20 26 40 52 65 104 130 260 520 58788581 117577162 235154324 293942905 470308648 587885810 764251553 1175771620 1528503106 2351543240 3057006212 3821257765 6114012424 7642515530 15285031060 30570062120