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30211132880 = 245437386357
BaseRepresentation
bin11100001000101110…
…010100110111010000
32212222110120120020102
4130020232110313100
5443333022223010
621513453231532
72116442251415
oct341056246720
985873516212
1030211132880
11118a3440315
125a317925a8
132b060497b6
1416684c810c
15bbc431ba5
hex708b94dd0

30211132880 has 40 divisors (see below), whose sum is σ = 70257759912. Its totient is φ = 12081549824.

The previous prime is 30211132849. The next prime is 30211132907. The reversal of 30211132880 is 8823111203.

It can be written as a sum of positive squares in 4 ways, for example, as 5832682384 + 24378450496 = 76372^2 + 156136^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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, 306662 + ... + 393018.

Almost surely, 230211132880 is an apocalyptic number.

It is an amenable number.

30211132880 is an abundant number, since it is smaller than the sum of its proper divisors (40046627032).

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

30211132880 is a wasteful number, since it uses less digits than its factorization.

30211132880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90743 (or 90737 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The spelling of 30211132880 in words is "thirty billion, two hundred eleven million, one hundred thirty-two thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 4373 8746 17492 21865 34984 43730 69968 86357 87460 172714 174920 345428 349840 431785 690856 863570 1381712 1727140 3454280 6908560 377639161 755278322 1510556644 1888195805 3021113288 3776391610 6042226576 7552783220 15105566440 30211132880