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30102302080 = 275103456649
BaseRepresentation
bin11100000010001111…
…001010110110000000
32212200212210101110001
4130002033022312000
5443122142131310
621455004445344
72113651226434
oct340217126600
985625711401
1030102302080
1111847a68104
125a01249854
132ab9633686
141657c789c4
15bb2ad593a
hex7023cad80

30102302080 has 64 divisors (see below), whose sum is σ = 72662148000. Its totient is φ = 11923992576.

The previous prime is 30102302071. The next prime is 30102302173. The reversal of 30102302080 is 8020320103.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×301023020802 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 162405 + ... + 294244.

Almost surely, 230102302080 is an apocalyptic number.

It is an amenable number.

30102302080 is an abundant number, since it is smaller than the sum of its proper divisors (42559845920).

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

30102302080 is a wasteful number, since it uses less digits than its factorization.

30102302080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456771 (or 456759 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 30102302080 its reverse (8020320103), we get a palindrome (38122622183).

The spelling of 30102302080 in words is "thirty billion, one hundred two million, three hundred two thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 103 128 160 206 320 412 515 640 824 1030 1648 2060 3296 4120 6592 8240 13184 16480 32960 65920 456649 913298 1826596 2283245 3653192 4566490 7306384 9132980 14612768 18265960 29225536 36531920 47034847 58451072 73063840 94069694 146127680 188139388 235174235 292255360 376278776 470348470 752557552 940696940 1505115104 1881393880 3010230208 3762787760 6020460416 7525575520 15051151040 30102302080