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30893025 = 3522317909
BaseRepresentation
bin111010111011…
…0001111100001
32011010112021010
41311312033201
530402034100
63022051133
7523405062
oct165661741
964115233
1030893025
1116490429
12a419aa9
1365285c7
144162569
152aa3750
hex1d763e1

30893025 has 24 divisors (see below), whose sum is σ = 53300160. Its totient is φ = 15759040.

The previous prime is 30893017. The next prime is 30893059. The reversal of 30893025 is 52039803.

It is a happy number.

It is not a de Polignac number, because 30893025 - 23 = 30893017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30892983 and 30893001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7230 + ... + 10679.

It is an arithmetic number, because the mean of its divisors is an integer number (2220840).

Almost surely, 230893025 is an apocalyptic number.

It is an amenable number.

30893025 is a deficient number, since it is larger than the sum of its proper divisors (22407135).

30893025 is a wasteful number, since it uses less digits than its factorization.

30893025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17945 (or 17940 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 30893025 is about 5558.1494222448. The cubic root of 30893025 is about 313.7763055779.

The spelling of 30893025 in words is "thirty million, eight hundred ninety-three thousand, twenty-five".

Divisors: 1 3 5 15 23 25 69 75 115 345 575 1725 17909 53727 89545 268635 411907 447725 1235721 1343175 2059535 6178605 10297675 30893025