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38988628842 = 2319933319803
BaseRepresentation
bin100100010011111001…
…110100001101101010
310201122011222120002110
4210103321310031222
51114322042110332
625524445343150
72550113606562
oct442371641552
9121564876073
1038988628842
1115598078a09
127681267ab6
1338a46936a7
141c5c13dda2
151032d0b4cc
hex913e7436a

38988628842 has 32 divisors (see below), whose sum is σ = 78400627200. Its totient is φ = 12925701360.

The previous prime is 38988628829. The next prime is 38988628849. The reversal of 38988628842 is 24882688983.

38988628842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×389886288422 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38988628849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3972313 + ... + 3982115.

It is an arithmetic number, because the mean of its divisors is an integer number (2450019600).

Almost surely, 238988628842 is an apocalyptic number.

38988628842 is an abundant number, since it is smaller than the sum of its proper divisors (39411998358).

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

38988628842 is a wasteful number, since it uses less digits than its factorization.

38988628842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13338.

The product of its digits is 84934656, while the sum is 66.

The spelling of 38988628842 in words is "thirty-eight billion, nine hundred eighty-eight million, six hundred twenty-eight thousand, eight hundred forty-two".

Divisors: 1 2 3 6 199 398 597 1194 3331 6662 9803 9993 19606 19986 29409 58818 662869 1325738 1950797 1988607 3901594 3977214 5852391 11704782 32653793 65307586 97961379 195922758 6498104807 12996209614 19494314421 38988628842