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10404031240 = 235809321509
BaseRepresentation
bin10011011000010000…
…01110101100001000
3222212002000112210101
421230020032230020
5132301412444430
64440214255144
7515551543411
oct115410165410
928762015711
1010404031240
114459893729
1220243574b4
13c9a610905
14709a96808
1540d5badca
hex26c20eb08

10404031240 has 32 divisors (see below), whose sum is σ = 23438079000. Its totient is φ = 4156455424.

The previous prime is 10404031223. The next prime is 10404031273. The reversal of 10404031240 is 4213040401.

It can be written as a sum of positive squares in 4 ways, for example, as 8651604196 + 1752427044 = 93014^2 + 41862^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 128395 + ... + 193114.

Almost surely, 210404031240 is an apocalyptic number.

10404031240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10404031240 is an abundant number, since it is smaller than the sum of its proper divisors (13034047760).

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

10404031240 is a wasteful number, since it uses less digits than its factorization.

10404031240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322329 (or 322325 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 10404031240 its reverse (4213040401), we get a palindrome (14617071641).

The spelling of 10404031240 in words is "ten billion, four hundred four million, thirty-one thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 20 40 809 1618 3236 4045 6472 8090 16180 32360 321509 643018 1286036 1607545 2572072 3215090 6430180 12860360 260100781 520201562 1040403124 1300503905 2080806248 2601007810 5202015620 10404031240