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30008052 = 2232833557
BaseRepresentation
bin111001001111…
…0001011110100
32002110120022100
41302132023310
530140224202
62551102100
7513031014
oct162361364
962416270
1030008052
1115a36548
12a071930
1362a8859
143db1c44
15297b41c
hex1c9e2f4

30008052 has 18 divisors (see below), whose sum is σ = 75853778. Its totient is φ = 10002672.

The previous prime is 30008047. The next prime is 30008053. The reversal of 30008052 is 25080003.

It can be written as a sum of positive squares in only one way, i.e., 18352656 + 11655396 = 4284^2 + 3414^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30008053) 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, 416743 + ... + 416814.

Almost surely, 230008052 is an apocalyptic number.

It is an amenable number.

30008052 is an abundant number, since it is smaller than the sum of its proper divisors (45845726).

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

30008052 is a wasteful number, since it uses less digits than its factorization.

30008052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833567 (or 833562 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 30008052 is about 5477.9605694090. The cubic root of 30008052 is about 310.7510474821.

Adding to 30008052 its reverse (25080003), we get a palindrome (55088055).

The spelling of 30008052 in words is "thirty million, eight thousand, fifty-two".

Divisors: 1 2 3 4 6 9 12 18 36 833557 1667114 2500671 3334228 5001342 7502013 10002684 15004026 30008052