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72000351 = 32131173353
BaseRepresentation
bin1000100101010…
…10001101011111
312000110222220200
410102222031133
5121413002401
611051114543
71532664363
oct422521537
9160428820
1072000351
1137707a25
1220142a53
1311bbc177
1497c32a3
1564c3686
hex44aa35f

72000351 has 24 divisors (see below), whose sum is σ = 105698736. Its totient is φ = 47224320.

The previous prime is 72000343. The next prime is 72000353. The reversal of 72000351 is 15300027.

It is not a de Polignac number, because 72000351 - 23 = 72000343 is a prime.

72000351 is a modest number, since divided by 351 gives 72 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72000353) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203791 + ... + 204143.

It is an arithmetic number, because the mean of its divisors is an integer number (4404114).

Almost surely, 272000351 is an apocalyptic number.

72000351 is a deficient number, since it is larger than the sum of its proper divisors (33698385).

72000351 is a wasteful number, since it uses less digits than its factorization.

72000351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 72000351 is about 8485.3020570867. The cubic root of 72000351 is about 416.0174406365.

Adding to 72000351 its reverse (15300027), we get a palindrome (87300378).

The spelling of 72000351 in words is "seventy-two million, three hundred fifty-one", and thus it is an aban number.

Divisors: 1 3 9 131 173 353 393 519 1059 1179 1557 3177 22663 46243 61069 67989 138729 183207 203967 416187 549621 8000039 24000117 72000351