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10251004240 = 245128137553
BaseRepresentation
bin10011000110000000…
…11110100101010000
3222110102001222012201
421203000132211100
5131443224113430
64413110332544
7512013045511
oct114300364520
928412058181
1010251004240
114390474234
121ba105a154
13c749c1ca9
146d3620a08
153eee3e8ca
hex26301e950

10251004240 has 20 divisors (see below), whose sum is σ = 23833585044. Its totient is φ = 4100401664.

The previous prime is 10251004237. The next prime is 10251004249. The reversal of 10251004240 is 4240015201.

It can be written as a sum of positive squares in 2 ways, for example, as 3162037824 + 7088966416 = 56232^2 + 84196^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10251004249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64068697 + ... + 64068856.

Almost surely, 210251004240 is an apocalyptic number.

10251004240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10251004240 is an abundant number, since it is smaller than the sum of its proper divisors (13582580804).

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

10251004240 is a wasteful number, since it uses less digits than its factorization.

10251004240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128137566 (or 128137560 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 10251004240 its reverse (4240015201), we get a palindrome (14491019441).

The spelling of 10251004240 in words is "ten billion, two hundred fifty-one million, four thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 16 20 40 80 128137553 256275106 512550212 640687765 1025100424 1281375530 2050200848 2562751060 5125502120 10251004240