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34880287680 = 26325773137173
BaseRepresentation
bin100000011111000001…
…101111001111000000
310100000212102012111200
4200133001233033000
51032413323201210
624005045341200
72343236360550
oct403701571700
9110025365450
1034880287680
111387a016437
126915407800
13339b49a9a4
14198c667160
15d922d50c0
hex81f06f3c0

34880287680 has 672 divisors, whose sum is σ = 140814820224. Its totient is φ = 7760904192.

The previous prime is 34880287657. The next prime is 34880287709. The reversal of 34880287680 is 8678208843.

34880287680 is a `hidden beast` number, since 3 + 488 + 0 + 2 + 87 + 6 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 201620074 + ... + 201620246.

Almost surely, 234880287680 is an apocalyptic number.

34880287680 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 34880287680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70407410112).

34880287680 is an abundant number, since it is smaller than the sum of its proper divisors (105934532544).

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

34880287680 is a wasteful number, since it uses less digits than its factorization.

34880287680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 54.

The spelling of 34880287680 in words is "thirty-four billion, eight hundred eighty million, two hundred eighty-seven thousand, six hundred eighty".