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271938820 = 22531438611
BaseRepresentation
bin10000001101010…
…111010100000100
3200221200220221011
4100031113110010
51024104020240
642552332004
76511304356
oct2015272404
9627626834
10271938820
1112a55872a
12770a4004
134445445a
142818b0d6
1518d196ea
hex10357504

271938820 has 24 divisors (see below), whose sum is σ = 589494528. Its totient is φ = 105266400.

The previous prime is 271938803. The next prime is 271938853. The reversal of 271938820 is 28839172.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218686 + ... + 219925.

It is an arithmetic number, because the mean of its divisors is an integer number (24562272).

Almost surely, 2271938820 is an apocalyptic number.

271938820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

271938820 is an abundant number, since it is smaller than the sum of its proper divisors (317555708).

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

271938820 is a wasteful number, since it uses less digits than its factorization.

271938820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438651 (or 438649 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 271938820 is about 16490.5676069685. The cubic root of 271938820 is about 647.8737783163.

The spelling of 271938820 in words is "two hundred seventy-one million, nine hundred thirty-eight thousand, eight hundred twenty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 620 438611 877222 1754444 2193055 4386110 8772220 13596941 27193882 54387764 67984705 135969410 271938820