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351368140 = 225193892377
BaseRepresentation
bin10100111100010…
…111001111001100
3220111011100110211
4110330113033030
51204422240030
654511012204
711464402624
oct2474271714
9814140424
10351368140
1117037a0a2
129980a064
1357a44b56
1434945884
1520ca912a
hex14f173cc

351368140 has 48 divisors (see below), whose sum is σ = 779032800. Its totient is φ = 132751872.

The previous prime is 351368077. The next prime is 351368141. The reversal of 351368140 is 41863153.

It is not an unprimeable number, because it can be changed into a prime (351368141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146632 + ... + 149008.

It is an arithmetic number, because the mean of its divisors is an integer number (16229850).

Almost surely, 2351368140 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 351368140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (389516400).

351368140 is an abundant number, since it is smaller than the sum of its proper divisors (427664660).

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

351368140 is a wasteful number, since it uses less digits than its factorization.

351368140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2794 (or 2792 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 351368140 is about 18744.8163501273. The cubic root of 351368140 is about 705.6469356319.

The spelling of 351368140 in words is "three hundred fifty-one million, three hundred sixty-eight thousand, one hundred forty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 380 389 778 1556 1945 2377 3890 4754 7391 7780 9508 11885 14782 23770 29564 36955 45163 47540 73910 90326 147820 180652 225815 451630 903260 924653 1849306 3698612 4623265 9246530 17568407 18493060 35136814 70273628 87842035 175684070 351368140