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108204015140 = 225132931420373
BaseRepresentation
bin110010011000101110…
…1100011111000100100
3101100021220221111022022
41210301131203320210
53233100211441030
6121412551322312
710550252644664
oct1446135437044
9340256844268
10108204015140
1141986389101
1218b79380398
13a2853b4580
1453468741a4
152c345d3de5
hex1931763e24

108204015140 has 48 divisors (see below), whose sum is σ = 245542894128. Its totient is φ = 39815867904.

The previous prime is 108204015121. The next prime is 108204015197. The reversal of 108204015140 is 41510402801.

It can be written as a sum of positive squares in 8 ways, for example, as 13443474916 + 94760540224 = 115946^2 + 307832^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 634007 + ... + 786366.

It is an arithmetic number, because the mean of its divisors is an integer number (5115476961).

Almost surely, 2108204015140 is an apocalyptic number.

108204015140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

108204015140 is an abundant number, since it is smaller than the sum of its proper divisors (137338878988).

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

108204015140 is a wasteful number, since it uses less digits than its factorization.

108204015140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420688 (or 1420686 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

Adding to 108204015140 its reverse (41510402801), we get a palindrome (149714417941).

The spelling of 108204015140 in words is "one hundred eight billion, two hundred four million, fifteen thousand, one hundred forty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 293 586 1172 1465 2930 3809 5860 7618 15236 19045 38090 76180 1420373 2840746 5681492 7101865 14203730 18464849 28407460 36929698 73859396 92324245 184648490 369296980 416169289 832338578 1664677156 2080846445 4161692890 5410200757 8323385780 10820401514 21640803028 27051003785 54102007570 108204015140