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30800668 = 22172915619
BaseRepresentation
bin111010101111…
…1101100011100
32010221211120111
41311133230130
530341110133
63020055404
7522541603
oct165375434
963854514
1030800668
1116427aa8
12a394564
1364c5562
14413aa3a
152a861cd
hex1d5fb1c

30800668 has 24 divisors (see below), whose sum is σ = 59043600. Its totient is φ = 13993728.

The previous prime is 30800663. The next prime is 30800681. The reversal of 30800668 is 86600803.

It is a super-2 number, since 2×308006682 = 1897362298492448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30800663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5838 + ... + 9781.

It is an arithmetic number, because the mean of its divisors is an integer number (2460150).

Almost surely, 230800668 is an apocalyptic number.

It is an amenable number.

30800668 is a deficient number, since it is larger than the sum of its proper divisors (28242932).

30800668 is a wasteful number, since it uses less digits than its factorization.

30800668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15669 (or 15667 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 30800668 is about 5549.8349525008. The cubic root of 30800668 is about 313.4633075787.

The spelling of 30800668 in words is "thirty million, eight hundred thousand, six hundred sixty-eight".

Divisors: 1 2 4 17 29 34 58 68 116 493 986 1972 15619 31238 62476 265523 452951 531046 905902 1062092 1811804 7700167 15400334 30800668