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140000030 = 2531538521
BaseRepresentation
bin10000101100000…
…11101100011110
3100202102201221022
420112003230132
5241320000110
621520404142
73316660232
oct1026035436
9322381838
10140000030
1172032105
123aa76652
132300a371
14148445c2
15c456755
hex8583b1e

140000030 has 32 divisors (see below), whose sum is σ = 265068288. Its totient is φ = 53164800.

The previous prime is 139999991. The next prime is 140000041. The reversal of 140000030 is 30000041.

It is a junction number, because it is equal to n+sod(n) for n = 139999972 and 140000017.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 12170 + ... + 20690.

It is an arithmetic number, because the mean of its divisors is an integer number (8283384).

Almost surely, 2140000030 is an apocalyptic number.

140000030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140000030 is a deficient number, since it is larger than the sum of its proper divisors (125068258).

140000030 is a wasteful number, since it uses less digits than its factorization.

140000030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8612.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 140000030 is about 11832.1608339305. The cubic root of 140000030 is about 519.2494472744.

Adding to 140000030 its reverse (30000041), we get a palindrome (170000071).

The spelling of 140000030 in words is "one hundred forty million, thirty", and thus it is an aban number.

Divisors: 1 2 5 10 31 53 62 106 155 265 310 530 1643 3286 8215 8521 16430 17042 42605 85210 264151 451613 528302 903226 1320755 2258065 2641510 4516130 14000003 28000006 70000015 140000030