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30486071 = 711235993
BaseRepresentation
bin111010001001…
…0111000110111
32010100212000202
41310102320313
530301023241
63005231115
7520061450
oct164227067
963325022
1030486071
1116232700
12a26249b
1364152c5
144098127
152a22d9b
hex1d12e37

30486071 has 12 divisors (see below), whose sum is σ = 38297616. Its totient is φ = 23754720.

The previous prime is 30486037. The next prime is 30486073. The reversal of 30486071 is 17068403.

It is not a de Polignac number, because 30486071 - 210 = 30485047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30486073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17150 + ... + 18843.

It is an arithmetic number, because the mean of its divisors is an integer number (3191468).

Almost surely, 230486071 is an apocalyptic number.

30486071 is a deficient number, since it is larger than the sum of its proper divisors (7811545).

30486071 is a wasteful number, since it uses less digits than its factorization.

30486071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36022 (or 36011 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 30486071 is about 5521.4192921748. The cubic root of 30486071 is about 312.3924186483.

It can be divided in two parts, 3048 and 6071, that added together give a palindrome (9119).

The spelling of 30486071 in words is "thirty million, four hundred eighty-six thousand, seventy-one".

Divisors: 1 7 11 77 121 847 35993 251951 395923 2771461 4355153 30486071