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30689060 = 2251534453
BaseRepresentation
bin111010100010…
…0011100100100
32010202011110212
41311010130210
530324022220
63013434552
7521565323
oct165043444
963664425
1030689060
1116361166
12a33ba58
13648680c
14410c0ba
152a630c5
hex1d44724

30689060 has 12 divisors (see below), whose sum is σ = 64447068. Its totient is φ = 12275616.

The previous prime is 30689053. The next prime is 30689081. The reversal of 30689060 is 6098603.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8202496 + 22486564 = 2864^2 + 4742^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 767207 + ... + 767246.

It is an arithmetic number, because the mean of its divisors is an integer number (5370589).

Almost surely, 230689060 is an apocalyptic number.

It is an amenable number.

30689060 is an abundant number, since it is smaller than the sum of its proper divisors (33758008).

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

30689060 is a wasteful number, since it uses less digits than its factorization.

30689060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534462 (or 1534460 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 30689060 is about 5539.7707533796. The cubic root of 30689060 is about 313.0842318733.

The spelling of 30689060 in words is "thirty million, six hundred eighty-nine thousand, sixty".

Divisors: 1 2 4 5 10 20 1534453 3068906 6137812 7672265 15344530 30689060