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1230031296 = 263213164267
BaseRepresentation
bin100100101010000…
…1100100111000000
310011201112001201200
41021110030213000
510004342000141
6322015501200
742324044034
oct11124144700
93151461650
101230031296
1158135879a
122a3b27800
13167aaa790
14b950a1c4
1572ebdab6
hex4950c9c0

1230031296 has 84 divisors (see below), whose sum is σ = 3796890552. Its totient is φ = 378468864.

The previous prime is 1230031279. The next prime is 1230031301. The reversal of 1230031296 is 6921300321.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 74646 + ... + 89621.

It is an arithmetic number, because the mean of its divisors is an integer number (45201078).

Almost surely, 21230031296 is an apocalyptic number.

1230031296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1230031296 is an abundant number, since it is smaller than the sum of its proper divisors (2566859256).

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

1230031296 is a wasteful number, since it uses less digits than its factorization.

1230031296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164298 (or 164285 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 1230031296 is about 35071.8020067404. The cubic root of 1230031296 is about 1071.4503568294.

The spelling of 1230031296 in words is "one billion, two hundred thirty million, thirty-one thousand, two hundred ninety-six".

Divisors: 1 2 3 4 6 8 9 12 13 16 18 24 26 32 36 39 48 52 64 72 78 96 104 117 144 156 192 208 234 288 312 416 468 576 624 832 936 1248 1872 2496 3744 7488 164267 328534 492801 657068 985602 1314136 1478403 1971204 2135471 2628272 2956806 3942408 4270942 5256544 5913612 6406413 7884816 8541884 10513088 11827224 12812826 15769632 17083768 19219239 23654448 25625652 31539264 34167536 38438478 47308896 51251304 68335072 76876956 94617792 102502608 136670144 153753912 205005216 307507824 410010432 615015648 1230031296