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38631013142 = 21910717354919
BaseRepresentation
bin100011111110100101…
…100111101100010110
310200201021001210120112
4203332211213230112
51113104014410032
625425152403022
72535212123321
oct437645475426
9120637053515
1038631013142
1115424221a47
1275a1546472
133848571c77
141c2684d7b8
15101171b1b2
hex8fe967b16

38631013142 has 32 divisors (see below), whose sum is σ = 61923398400. Its totient is φ = 18022769568.

The previous prime is 38631013139. The next prime is 38631013159. The reversal of 38631013142 is 24131013683.

It is a junction number, because it is equal to n+sod(n) for n = 38631013099 and 38631013108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 675959 + ... + 730877.

It is an arithmetic number, because the mean of its divisors is an integer number (1935106200).

Almost surely, 238631013142 is an apocalyptic number.

38631013142 is a deficient number, since it is larger than the sum of its proper divisors (23292385258).

38631013142 is a wasteful number, since it uses less digits than its factorization.

38631013142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55220.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 38631013142 in words is "thirty-eight billion, six hundred thirty-one million, thirteen thousand, one hundred forty-two".

Divisors: 1 2 19 38 107 173 214 346 2033 3287 4066 6574 18511 37022 54919 109838 351709 703418 1043461 2086922 5876333 9500987 11752666 19001974 111650327 180518753 223300654 361037506 1016605609 2033211218 19315506571 38631013142