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30215034 = 2321678613
BaseRepresentation
bin111001101000…
…0101101111010
32002212002020100
41303100231322
530213340114
62555340230
7514552323
oct163205572
962762210
1030215034
1116068003
12a151676
13634bb25
14402744a
1529bc909
hex1cd0b7a

30215034 has 12 divisors (see below), whose sum is σ = 65465946. Its totient is φ = 10071672.

The previous prime is 30215033. The next prime is 30215041. The reversal of 30215034 is 43051203.

It can be written as a sum of positive squares in only one way, i.e., 29648025 + 567009 = 5445^2 + 753^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1678613 = 30215034 / (3 + 0 + 2 + 1 + 5 + 0 + 3 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 30214998 and 30215016.

It is not an unprimeable number, because it can be changed into a prime (30215033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 839289 + ... + 839324.

Almost surely, 230215034 is an apocalyptic number.

30215034 is an abundant number, since it is smaller than the sum of its proper divisors (35250912).

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

30215034 is a wasteful number, since it uses less digits than its factorization.

30215034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678621 (or 1678618 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 30215034 is about 5496.8203536226. The cubic root of 30215034 is about 311.4638845372.

Adding to 30215034 its reverse (43051203), we get a palindrome (73266237).

The spelling of 30215034 in words is "thirty million, two hundred fifteen thousand, thirty-four".

Divisors: 1 2 3 6 9 18 1678613 3357226 5035839 10071678 15107517 30215034