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270138841 = 7236779317
BaseRepresentation
bin10000000110011…
…111110111011001
3200211022110211021
4100012133313121
51023123420331
642450002441
76460066540
oct2006376731
9624273737
10270138841
11129539345
1276576421
1343c7408b
1427c3d157
1518ab1211
hex1019fdd9

270138841 has 32 divisors (see below), whose sum is σ = 332144640. Its totient is φ = 214733376.

The previous prime is 270138833. The next prime is 270138851. The reversal of 270138841 is 148831072.

It is a happy number.

It is not a de Polignac number, because 270138841 - 23 = 270138833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 270138797 and 270138806.

It is not an unprimeable number, because it can be changed into a prime (270138851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 852015 + ... + 852331.

It is an arithmetic number, because the mean of its divisors is an integer number (10379520).

Almost surely, 2270138841 is an apocalyptic number.

It is an amenable number.

270138841 is a deficient number, since it is larger than the sum of its proper divisors (62005799).

270138841 is a wasteful number, since it uses less digits than its factorization.

270138841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 270138841 is about 16435.9009792588. The cubic root of 270138841 is about 646.4411746425.

The spelling of 270138841 in words is "two hundred seventy million, one hundred thirty-eight thousand, eight hundred forty-one".

Divisors: 1 7 23 67 79 161 317 469 553 1541 1817 2219 5293 7291 10787 12719 21239 25043 37051 51037 121739 148673 175301 488497 575989 852173 1677881 3419479 4031923 11745167 38591263 270138841