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102444300340 = 2257370167329
BaseRepresentation
bin101111101101000100…
…1111111100000110100
3100210102112000122221221
41133122021333200310
53134301220102330
6115021240520124
710254444120364
oct1373211774064
9323375018857
10102444300340
113a4a0156128
1217a30480044
1398780393c5
144d5b9329a4
1529e8b11b7a
hex17da27f834

102444300340 has 24 divisors (see below), whose sum is σ = 218080061640. Its totient is φ = 40416380928.

The previous prime is 102444300323. The next prime is 102444300341. The reversal of 102444300340 is 43003444201.

It can be written as a sum of positive squares in 4 ways, for example, as 41048380816 + 61395919524 = 202604^2 + 247782^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102444300341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35082205 + ... + 35085124.

It is an arithmetic number, because the mean of its divisors is an integer number (9086669235).

Almost surely, 2102444300340 is an apocalyptic number.

102444300340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102444300340 is an abundant number, since it is smaller than the sum of its proper divisors (115635761300).

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

102444300340 is a wasteful number, since it uses less digits than its factorization.

102444300340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70167411 (or 70167409 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 102444300340 its reverse (43003444201), we get a palindrome (145447744541).

The spelling of 102444300340 in words is "one hundred two billion, four hundred forty-four million, three hundred thousand, three hundred forty".

Divisors: 1 2 4 5 10 20 73 146 292 365 730 1460 70167329 140334658 280669316 350836645 701673290 1403346580 5122215017 10244430034 20488860068 25611075085 51222150170 102444300340