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30763008 = 211321669
BaseRepresentation
bin111010101011…
…0100000000000
32010212220220200
41311112200000
530333404013
63015205200
7522324033
oct165264000
963786820
1030763008
1116401781
12a376800
1364b1383
14412b01a
152a79e73
hex1d56800

30763008 has 72 divisors (see below), whose sum is σ = 88902450. Its totient is φ = 10248192.

The previous prime is 30763001. The next prime is 30763009. The reversal of 30763008 is 80036703.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 25887744 + 4875264 = 5088^2 + 2208^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×307630082 = 1892725322416128, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (30763001) 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, 17598 + ... + 19266.

Almost surely, 230763008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30763008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44451225).

30763008 is an abundant number, since it is smaller than the sum of its proper divisors (58139442).

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

30763008 is a wasteful number, since it uses less digits than its factorization.

30763008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697 (or 1674 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 30763008 is about 5546.4410210512. The cubic root of 30763008 is about 313.3354981994.

It can be divided in two parts, 3076 and 3008, that added together give a square (6084 = 782).

The spelling of 30763008 in words is "thirty million, seven hundred sixty-three thousand, eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 72 96 128 144 192 256 288 384 512 576 768 1024 1152 1536 1669 2048 2304 3072 3338 4608 5007 6144 6676 9216 10014 13352 15021 18432 20028 26704 30042 40056 53408 60084 80112 106816 120168 160224 213632 240336 320448 427264 480672 640896 854528 961344 1281792 1709056 1922688 2563584 3418112 3845376 5127168 7690752 10254336 15381504 30763008