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30180833280 = 21136513311
BaseRepresentation
bin11100000110111010…
…101111100000000000
32212220100120012000000
4130012322233200000
5443302243131110
621510452000000
72115623564403
oct340672574000
985810505000
1030180833280
1111888325824
125a23600000
132acc99b340
14166447bd3a
15bb99491c0
hex706eaf800

30180833280 has 672 divisors, whose sum is σ = 117302683680. Its totient is φ = 7405240320.

The previous prime is 30180833219. The next prime is 30180833303. The reversal of 30180833280 is 8233808103.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 97044325 + ... + 97044635.

It is an arithmetic number, because the mean of its divisors is an integer number (174557565).

Almost surely, 230180833280 is an apocalyptic number.

30180833280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30180833280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58651341840).

30180833280 is an abundant number, since it is smaller than the sum of its proper divisors (87121850400).

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

30180833280 is an equidigital number, since it uses as much as digits as its factorization.

30180833280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 30180833280 in words is "thirty billion, one hundred eighty million, eight hundred thirty-three thousand, two hundred eighty".