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30290018760 = 2332584138941
BaseRepresentation
bin11100001101011011…
…010000000111001000
32220011222000101022200
4130031123100013020
5444013221100020
621525352120200
72121420624411
oct341533200710
986158011280
1030290018760
1111933a20461
125a54096060
132b194a9a31
141674b80808
15bc4315590
hex70d6d01c8

30290018760 has 48 divisors (see below), whose sum is σ = 98442562140. Its totient is φ = 8077338240.

The previous prime is 30290018723. The next prime is 30290018767. The reversal of 30290018760 is 6781009203.

It can be written as a sum of positive squares in 2 ways, for example, as 29267682084 + 1022336676 = 171078^2 + 31974^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (30290018767) 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, 42069111 + ... + 42069830.

Almost surely, 230290018760 is an apocalyptic number.

30290018760 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30290018760 is an abundant number, since it is smaller than the sum of its proper divisors (68152543380).

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

30290018760 is a wasteful number, since it uses less digits than its factorization.

30290018760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84138958 (or 84138951 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The spelling of 30290018760 in words is "thirty billion, two hundred ninety million, eighteen thousand, seven hundred sixty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 72 90 120 180 360 84138941 168277882 252416823 336555764 420694705 504833646 673111528 757250469 841389410 1009667292 1262084115 1514500938 1682778820 2019334584 2524168230 3029001876 3365557640 3786252345 5048336460 6058003752 7572504690 10096672920 15145009380 30290018760