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70025271 = 32359103167
BaseRepresentation
bin1000010110010…
…00000000110111
311212202122121120
410023020000313
5120411302041
610540515023
71510130211
oct413100067
9155678546
1070025271
1136589028
121b54ba73
131167a194
14942b5b1
156233366
hex42c8037

70025271 has 32 divisors (see below), whose sum is σ = 100638720. Its totient is φ = 43210464.

The previous prime is 70025269. The next prime is 70025303. The reversal of 70025271 is 17252007.

It is not a de Polignac number, because 70025271 - 21 = 70025269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70025471) 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, 419230 + ... + 419396.

It is an arithmetic number, because the mean of its divisors is an integer number (3144960).

Almost surely, 270025271 is an apocalyptic number.

70025271 is a deficient number, since it is larger than the sum of its proper divisors (30613449).

70025271 is a wasteful number, since it uses less digits than its factorization.

70025271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355.

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 70025271 is about 8368.1103601709. The cubic root of 70025271 is about 412.1781187762.

Adding to 70025271 its reverse (17252007), we get a palindrome (87277278).

The spelling of 70025271 in words is "seventy million, twenty-five thousand, two hundred seventy-one".

Divisors: 1 3 23 59 69 103 167 177 309 501 1357 2369 3841 4071 6077 7107 9853 11523 17201 18231 29559 51603 139771 226619 395623 419313 679857 1014859 1186869 3044577 23341757 70025271