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140879025 = 32527233889
BaseRepresentation
bin10000110010110…
…10010010110001
3100211002101200200
420121122102301
5242031112100
621551305413
73330311010
oct1031322261
9324071620
10140879025
1172582551
123b21b269
1323257491
14149d2a77
15c57be00
hex865a4b1

140879025 has 72 divisors (see below), whose sum is σ = 300992640. Its totient is φ = 61585920.

The previous prime is 140878987. The next prime is 140879027. The reversal of 140879025 is 520978041.

It is not a de Polignac number, because 140879025 - 29 = 140878513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140879027) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 34281 + ... + 38169.

Almost surely, 2140879025 is an apocalyptic number.

140879025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140879025 is an abundant number, since it is smaller than the sum of its proper divisors (160113615).

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

140879025 is a wasteful number, since it uses less digits than its factorization.

140879025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3935 (or 3927 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 140879025 is about 11869.2470275077. The cubic root of 140879025 is about 520.3338893623. Note that the first 3 decimals are identical.

The spelling of 140879025 in words is "one hundred forty million, eight hundred seventy-nine thousand, twenty-five".

Divisors: 1 3 5 7 9 15 21 23 25 35 45 63 69 75 105 115 161 175 207 225 315 345 483 525 575 805 1035 1449 1575 1725 2415 3889 4025 5175 7245 11667 12075 19445 27223 35001 36225 58335 81669 89447 97225 136115 175005 245007 268341 291675 408345 447235 626129 680575 805023 875025 1225035 1341705 1878387 2041725 2236175 3130645 4025115 5635161 6125175 6708525 9391935 15653225 20125575 28175805 46959675 140879025