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13858787140 = 22511199931513
BaseRepresentation
bin11001110100000110…
…00100111101000100
31022202211202022221121
430322003010331010
5211340322142030
610211105523324
71000301514142
oct147203047504
938684668847
1013858787140
115971a189a0
122829343544
1313cb298783
14956838592
15561a3c47a
hex33a0c4f44

13858787140 has 48 divisors (see below), whose sum is σ = 31766112000. Its totient is φ = 5036878080.

The previous prime is 13858787099. The next prime is 13858787147. The reversal of 13858787140 is 4178785831.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13858787147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424024 + ... + 455536.

It is an arithmetic number, because the mean of its divisors is an integer number (661794000).

Almost surely, 213858787140 is an apocalyptic number.

13858787140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13858787140 is an abundant number, since it is smaller than the sum of its proper divisors (17907324860).

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

13858787140 is a wasteful number, since it uses less digits than its factorization.

13858787140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33532 (or 33530 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 52.

The spelling of 13858787140 in words is "thirteen billion, eight hundred fifty-eight million, seven hundred eighty-seven thousand, one hundred forty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 1999 3998 7996 9995 19990 21989 31513 39980 43978 63026 87956 109945 126052 157565 219890 315130 346643 439780 630260 693286 1386572 1733215 3466430 6932860 62994487 125988974 251977948 314972435 629944870 692939357 1259889740 1385878714 2771757428 3464696785 6929393570 13858787140