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30288740260 = 2251514437013
BaseRepresentation
bin11100001101010110…
…010111111110100100
32220011212121102112211
4130031112113332210
5444012404142020
621525304453204
72121404021122
oct341526277644
986155542484
1030288740260
1111933227949
125a5377a204
132b1914cb1c
14167492a912
15bc416185a
hex70d597fa4

30288740260 has 12 divisors (see below), whose sum is σ = 63606354588. Its totient is φ = 12115496096.

The previous prime is 30288740249. The next prime is 30288740263. The reversal of 30288740260 is 6204788203.

It can be written as a sum of positive squares in 2 ways, for example, as 3078918144 + 27209822116 = 55488^2 + 164954^2 .

It is not an unprimeable number, because it can be changed into a prime (30288740263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757218487 + ... + 757218526.

It is an arithmetic number, because the mean of its divisors is an integer number (5300529549).

Almost surely, 230288740260 is an apocalyptic number.

It is an amenable number.

30288740260 is an abundant number, since it is smaller than the sum of its proper divisors (33317614328).

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

30288740260 is a wasteful number, since it uses less digits than its factorization.

30288740260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514437022 (or 1514437020 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The spelling of 30288740260 in words is "thirty billion, two hundred eighty-eight million, seven hundred forty thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 1514437013 3028874026 6057748052 7572185065 15144370130 30288740260