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13400054442 = 2321821140879
BaseRepresentation
bin11000111101011010…
…01001101010101010
31021120212120021222200
430132231021222222
5204420403220232
610053401401030
7653031404055
oct143655115252
937525507880
1013400054442
115756a88265
12271b799176
131357231cc8
14911945a9c
1553662677c
hex31eb49aaa

13400054442 has 24 divisors (see below), whose sum is σ = 29035755840. Its totient is φ = 4466330280.

The previous prime is 13400054441. The next prime is 13400054461. The reversal of 13400054442 is 24445000431.

It is a happy number.

It is a super-2 number, since 2×134000544422 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13400054441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 307359 + ... + 348237.

It is an arithmetic number, because the mean of its divisors is an integer number (1209823160).

Almost surely, 213400054442 is an apocalyptic number.

13400054442 is an abundant number, since it is smaller than the sum of its proper divisors (15635701398).

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

13400054442 is a wasteful number, since it uses less digits than its factorization.

13400054442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59098 (or 59095 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 13400054442 its reverse (24445000431), we get a palindrome (37845054873).

The spelling of 13400054442 in words is "thirteen billion, four hundred million, fifty-four thousand, four hundred forty-two".

Divisors: 1 2 3 6 9 18 18211 36422 40879 54633 81758 109266 122637 163899 245274 327798 367911 735822 744447469 1488894938 2233342407 4466684814 6700027221 13400054442