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1538160140 = 2251161114617
BaseRepresentation
bin101101110101110…
…0111011000001100
310222012022122001002
41123223213120030
511122232111030
6412344035432
753055100616
oct13353473014
93865278032
101538160140
1171a284530
1236b162b78
131b689353a
141083d7db6
1590086245
hex5bae760c

1538160140 has 48 divisors (see below), whose sum is σ = 3581583264. Its totient is φ = 550156800.

The previous prime is 1538160133. The next prime is 1538160161. The reversal of 1538160140 is 410618351.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 43889 + ... + 70728.

It is an arithmetic number, because the mean of its divisors is an integer number (74616318).

Almost surely, 21538160140 is an apocalyptic number.

1538160140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1538160140 is an abundant number, since it is smaller than the sum of its proper divisors (2043423124).

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

1538160140 is a wasteful number, since it uses less digits than its factorization.

1538160140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114698 (or 114696 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1538160140 is about 39219.3847478514. The cubic root of 1538160140 is about 1154.3402815341.

Adding to 1538160140 its reverse (410618351), we get a palindrome (1948778491).

The spelling of 1538160140 in words is "one billion, five hundred thirty-eight million, one hundred sixty thousand, one hundred forty".

Divisors: 1 2 4 5 10 11 20 22 44 55 61 110 122 220 244 305 610 671 1220 1342 2684 3355 6710 13420 114617 229234 458468 573085 1146170 1260787 2292340 2521574 5043148 6303935 6991637 12607870 13983274 25215740 27966548 34958185 69916370 76908007 139832740 153816014 307632028 384540035 769080070 1538160140