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38716881 = 3717310657
BaseRepresentation
bin1001001110110…
…0010111010001
32200212000120120
42103230113101
534402420011
63501500453
7650042130
oct223542721
980760516
1038716881
111a944625
1210b71729
1380377c8
1451db917
1535eba06
hex24ec5d1

38716881 has 16 divisors (see below), whose sum is σ = 59343744. Its totient is φ = 21993984.

The previous prime is 38716859. The next prime is 38716903. The reversal of 38716881 is 18861783.

38716881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (38716859) and next prime (38716903).

It is not a de Polignac number, because 38716881 - 25 = 38716849 is a prime.

It is a super-2 number, since 2×387168812 = 2997993748736322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38716831) 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 15 ways as a sum of consecutive naturals, for example, 1696 + ... + 8961.

It is an arithmetic number, because the mean of its divisors is an integer number (3708984).

Almost surely, 238716881 is an apocalyptic number.

It is an amenable number.

38716881 is a deficient number, since it is larger than the sum of its proper divisors (20626863).

38716881 is a wasteful number, since it uses less digits than its factorization.

38716881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10840.

The product of its digits is 64512, while the sum is 42.

The square root of 38716881 is about 6222.2890482523. The cubic root of 38716881 is about 338.2985382181.

The spelling of 38716881 in words is "thirty-eight million, seven hundred sixteen thousand, eight hundred eighty-one".

Divisors: 1 3 7 21 173 519 1211 3633 10657 31971 74599 223797 1843661 5530983 12905627 38716881