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57864797720 = 2353314370453
BaseRepresentation
bin110101111001000000…
…101011111000011000
312112100200211021212022
4311321000223320120
51422001342011340
642325511234012
74115641444112
oct657100537030
9175320737768
1057864797720
11225a4195a84
12b26a978908
1355c22954a2
142b2d0823b2
15178a0853b5
hexd7902be18

57864797720 has 32 divisors (see below), whose sum is σ = 130589165520. Its totient is φ = 23075986560.

The previous prime is 57864797713. The next prime is 57864797729. The reversal of 57864797720 is 2779746875.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57864797729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2171987 + ... + 2198466.

Almost surely, 257864797720 is an apocalyptic number.

It is an amenable number.

57864797720 is an abundant number, since it is smaller than the sum of its proper divisors (72724367800).

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

57864797720 is a wasteful number, since it uses less digits than its factorization.

57864797720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4370795 (or 4370791 counting only the distinct ones).

The product of its (nonzero) digits is 41489280, while the sum is 62.

The spelling of 57864797720 in words is "fifty-seven billion, eight hundred sixty-four million, seven hundred ninety-seven thousand, seven hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 331 662 1324 1655 2648 3310 6620 13240 4370453 8740906 17481812 21852265 34963624 43704530 87409060 174818120 1446619943 2893239886 5786479772 7233099715 11572959544 14466199430 28932398860 57864797720