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145910830 = 251317103641
BaseRepresentation
bin10001011001001…
…10110000101110
3101011120001000211
420230212300232
5244323121310
622251213034
73421136002
oct1054466056
9334501024
10145910830
11753a9a6a
1240a4717a
13242c9890
1415542702
15cc22c8a
hex8b26c2e

145910830 has 64 divisors (see below), whose sum is σ = 302859648. Its totient is φ = 50135040.

The previous prime is 145910819. The next prime is 145910837. The reversal of 145910830 is 38019541.

It is a super-2 number, since 2×1459108302 = 42579940622577800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145910792 and 145910801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145910837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227310 + ... + 227950.

It is an arithmetic number, because the mean of its divisors is an integer number (4732182).

Almost surely, 2145910830 is an apocalyptic number.

145910830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145910830 is an abundant number, since it is smaller than the sum of its proper divisors (156948818).

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

145910830 is a wasteful number, since it uses less digits than its factorization.

145910830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 145910830 is about 12079.3555291663. The cubic root of 145910830 is about 526.4565207824.

The spelling of 145910830 in words is "one hundred forty-five million, nine hundred ten thousand, eight hundred thirty".

Divisors: 1 2 5 10 13 17 26 34 65 85 103 130 170 206 221 442 515 641 1030 1105 1282 1339 1751 2210 2678 3205 3502 6410 6695 8333 8755 10897 13390 16666 17510 21794 22763 41665 45526 54485 66023 83330 108970 113815 132046 141661 227630 283322 330115 660230 708305 858299 1122391 1416610 1716598 2244782 4291495 5611955 8582990 11223910 14591083 29182166 72955415 145910830