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13888056510 = 23251011527839
BaseRepresentation
bin11001110111100101…
…01110110010111110
31022211212211100222100
430323302232302332
5211420320302020
610214033125530
71001105350446
oct147362566276
938755740870
1013888056510
11598749a459
1228370b98a6
131404376023
1495a697126
155643bea90
hex33bcaecbe

13888056510 has 48 divisors (see below), whose sum is σ = 36466485120. Its totient is φ = 3666811200.

The previous prime is 13888056509. The next prime is 13888056521. The reversal of 13888056510 is 1565088831.

13888056510 is a `hidden beast` number, since 1 + 3 + 8 + 8 + 80 + 56 + 510 = 666.

It is a super-2 number, since 2×138880565102 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 754830 + ... + 773009.

It is an arithmetic number, because the mean of its divisors is an integer number (759718440).

Almost surely, 213888056510 is an apocalyptic number.

13888056510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13888056510 is an abundant number, since it is smaller than the sum of its proper divisors (22578428610).

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

13888056510 is a wasteful number, since it uses less digits than its factorization.

13888056510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527953 (or 1527950 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 45.

The spelling of 13888056510 in words is "thirteen billion, eight hundred eighty-eight million, fifty-six thousand, five hundred ten".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 101 202 303 505 606 909 1010 1515 1818 3030 4545 9090 1527839 3055678 4583517 7639195 9167034 13750551 15278390 22917585 27501102 45835170 68752755 137505510 154311739 308623478 462935217 771558695 925870434 1388805651 1543117390 2314676085 2777611302 4629352170 6944028255 13888056510