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38291111112 = 23310115796663
BaseRepresentation
bin100011101010010100…
…111111110011001000
310122211120110222122110
4203222110333303020
51111410011023422
625331331222320
72523614034312
oct435224776310
9118746428573
1038291111112
111526a374581
1275077479a0
1337c30130c7
141bd36507b2
15ee197960c
hex8ea53fcc8

38291111112 has 32 divisors (see below), whose sum is σ = 96675583680. Its totient is φ = 12637329600.

The previous prime is 38291111101. The next prime is 38291111129. The reversal of 38291111112 is 21111119283.

It is a self number, because there is not a number n which added to its sum of digits gives 38291111112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7895908 + ... + 7900755.

It is an arithmetic number, because the mean of its divisors is an integer number (3021111990).

Almost surely, 238291111112 is an apocalyptic number.

It is an amenable number.

38291111112 is an abundant number, since it is smaller than the sum of its proper divisors (58384472568).

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

38291111112 is a wasteful number, since it uses less digits than its factorization.

38291111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15796773 (or 15796769 counting only the distinct ones).

The product of its digits is 864, while the sum is 30.

The spelling of 38291111112 in words is "thirty-eight billion, two hundred ninety-one million, one hundred eleven thousand, one hundred twelve".

Divisors: 1 2 3 4 6 8 12 24 101 202 303 404 606 808 1212 2424 15796663 31593326 47389989 63186652 94779978 126373304 189559956 379119912 1595462963 3190925926 4786388889 6381851852 9572777778 12763703704 19145555556 38291111112