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100280810872 = 23112103595879
BaseRepresentation
bin101110101100100110…
…0111011110101111000
3100120211202001000100101
41131121030323311320
53120333341421442
6114022433445144
710150023554044
oct1353114736570
9316752030311
10100280810872
113958a9a3500
1217527a107b4
1395c1a4c218
144bd447b024
15291dc07cb7
hex175933bd78

100280810872 has 24 divisors (see below), whose sum is σ = 206673780600. Its totient is φ = 45582186320.

The previous prime is 100280810869. The next prime is 100280810881. The reversal of 100280810872 is 278018082001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51796972 + ... + 51798907.

It is an arithmetic number, because the mean of its divisors is an integer number (8611407525).

Almost surely, 2100280810872 is an apocalyptic number.

It is an amenable number.

100280810872 is an abundant number, since it is smaller than the sum of its proper divisors (106392969728).

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

100280810872 is a wasteful number, since it uses less digits than its factorization.

100280810872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103595907 (or 103595892 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 37.

Adding to 100280810872 its reverse (278018082001), we get a palindrome (378298892873).

The spelling of 100280810872 in words is "one hundred billion, two hundred eighty million, eight hundred ten thousand, eight hundred seventy-two".

Divisors: 1 2 4 8 11 22 44 88 121 242 484 968 103595879 207191758 414383516 828767032 1139554669 2279109338 4558218676 9116437352 12535101359 25070202718 50140405436 100280810872