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44102131220 = 22571117282019
BaseRepresentation
bin101001000100101100…
…010001111000010100
311012211112221101122102
4221010230101320110
51210310121144340
632132113421232
73120614634020
oct510454217024
9135745841572
1044102131220
1117781559a34
12866986a818
13420abb2844
1421c5309380
151231bd3215
hexa44b11e14

44102131220 has 48 divisors (see below), whose sum is σ = 105940248960. Its totient is φ = 15107140224.

The previous prime is 44102131207. The next prime is 44102131261. The reversal of 44102131220 is 2213120144.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 44102131192 and 44102131201.

It is a congruent number.

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, 15371 + ... + 297389.

It is an arithmetic number, because the mean of its divisors is an integer number (2207088520).

Almost surely, 244102131220 is an apocalyptic number.

It is an amenable number.

44102131220 is an abundant number, since it is smaller than the sum of its proper divisors (61838117740).

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

44102131220 is a wasteful number, since it uses less digits than its factorization.

44102131220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283152 (or 283150 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 44102131220 its reverse (2213120144), we get a palindrome (46315251364).

The spelling of 44102131220 in words is "forty-four billion, one hundred two million, one hundred thirty-one thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 1117 2234 4468 5585 7819 11170 15638 22340 31276 39095 78190 156380 282019 564038 1128076 1410095 1974133 2820190 3948266 5640380 7896532 9870665 19741330 39482660 315015223 630030446 1260060892 1575076115 2205106561 3150152230 4410213122 6300304460 8820426244 11025532805 22051065610 44102131220