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14052131920 = 245243772077
BaseRepresentation
bin11010001011001001…
…01000010001010000
31100021022120021010101
431011210220101100
5212234321210140
610242213542144
71005140102431
oct150544502120
940238507111
1014052131920
115a61075772
122882044954
13142c362778
149743a7488
155739ce99a
hex345928450

14052131920 has 40 divisors (see below), whose sum is σ = 32685066504. Its totient is φ = 5618468352.

The previous prime is 14052131879. The next prime is 14052131939. The reversal of 14052131920 is 2913125041.

It can be written as a sum of positive squares in 4 ways, for example, as 1379676736 + 12672455184 = 37144^2 + 112572^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×140521319202 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158922 + ... + 230998.

Almost surely, 214052131920 is an apocalyptic number.

14052131920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14052131920 is an abundant number, since it is smaller than the sum of its proper divisors (18632934584).

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

14052131920 is a wasteful number, since it uses less digits than its factorization.

14052131920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74527 (or 74521 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

Adding to 14052131920 its reverse (2913125041), we get a palindrome (16965256961).

The spelling of 14052131920 in words is "fourteen billion, fifty-two million, one hundred thirty-one thousand, nine hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 40 80 2437 4874 9748 12185 19496 24370 38992 48740 72077 97480 144154 194960 288308 360385 576616 720770 1153232 1441540 2883080 5766160 175651649 351303298 702606596 878258245 1405213192 1756516490 2810426384 3513032980 7026065960 14052131920