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30206036 = 2271078787
BaseRepresentation
bin111001100111…
…0100001010100
32002211121220002
41303032201110
530213043121
62555230432
7514514150
oct163164124
962747802
1030206036
1116061273
12a148418
1363479c3
144024060
1529b9e0b
hex1cce854

30206036 has 12 divisors (see below), whose sum is σ = 60412128. Its totient is φ = 12945432.

The previous prime is 30206009. The next prime is 30206039. The reversal of 30206036 is 63060203.

It is a happy number.

30206036 is an admirable number.

It is a super-2 number, since 2×302060362 = 1824809221666592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30205999 and 30206017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30206039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 539366 + ... + 539421.

It is an arithmetic number, because the mean of its divisors is an integer number (5034344).

Almost surely, 230206036 is an apocalyptic number.

It is an amenable number.

30206036 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

30206036 is a wasteful number, since it uses less digits than its factorization.

30206036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078798 (or 1078796 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 30206036 is about 5496.0018195048. The cubic root of 30206036 is about 311.4329636136.

Subtracting from 30206036 its sum of digits (20), we obtain a square (30206016 = 54962).

Adding to 30206036 its reverse (63060203), we get a palindrome (93266239).

The spelling of 30206036 in words is "thirty million, two hundred six thousand, thirty-six".

Divisors: 1 2 4 7 14 28 1078787 2157574 4315148 7551509 15103018 30206036