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8834274640 = 245293807877
BaseRepresentation
bin10000011101001000…
…00101010101010000
3211210200020122120001
420032210011111100
5121043033242030
64020341055344
7431631044512
oct101644052520
924720218501
108834274640
113823799324
1218666b7554
13aaa336859
145db3d5bb2
1536a892cca
hex20e905550

8834274640 has 40 divisors (see below), whose sum is σ = 21247959240. Its totient is φ = 3411856896.

The previous prime is 8834274593. The next prime is 8834274643. The reversal of 8834274640 is 464724388.

It can be written as a sum of positive squares in 4 ways, for example, as 2368184896 + 6466089744 = 48664^2 + 80412^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8834274643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1901619 + ... + 1906258.

It is an arithmetic number, because the mean of its divisors is an integer number (531198981).

Almost surely, 28834274640 is an apocalyptic number.

8834274640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8834274640 is an abundant number, since it is smaller than the sum of its proper divisors (12413684600).

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

8834274640 is a wasteful number, since it uses less digits than its factorization.

8834274640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3807919 (or 3807913 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 46.

The square root of 8834274640 is about 93990.8221051396. The cubic root of 8834274640 is about 2067.2371395434.

The spelling of 8834274640 in words is "eight billion, eight hundred thirty-four million, two hundred seventy-four thousand, six hundred forty".

Divisors: 1 2 4 5 8 10 16 20 29 40 58 80 116 145 232 290 464 580 1160 2320 3807877 7615754 15231508 19039385 30463016 38078770 60926032 76157540 110428433 152315080 220856866 304630160 441713732 552142165 883427464 1104284330 1766854928 2208568660 4417137320 8834274640