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30893000 = 235330893
BaseRepresentation
bin111010111011…
…0001111001000
32011010112020012
41311312033020
530402034000
63022051052
7523405025
oct165661710
964115205
1030893000
1116490406
12a419a88
1365285a8
14416254c
152aa3735
hex1d763c8

30893000 has 32 divisors (see below), whose sum is σ = 72291960. Its totient is φ = 12356800.

The previous prime is 30892999. The next prime is 30893003. The reversal of 30893000 is 39803.

It can be written as a sum of positive squares in 4 ways, for example, as 7409284 + 23483716 = 2722^2 + 4846^2 .

It is not an unprimeable number, because it can be changed into a prime (30893003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14447 + ... + 16446.

Almost surely, 230893000 is an apocalyptic number.

It is an amenable number.

30893000 is an abundant number, since it is smaller than the sum of its proper divisors (41398960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30893000 is a wasteful number, since it uses less digits than its factorization.

30893000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30914 (or 30900 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 30893000 is about 5558.1471732944. The cubic root of 30893000 is about 313.7762209373.

The spelling of 30893000 in words is "thirty million, eight hundred ninety-three thousand".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 125 200 250 500 1000 30893 61786 123572 154465 247144 308930 617860 772325 1235720 1544650 3089300 3861625 6178600 7723250 15446500 30893000