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106181929 = 715168847
BaseRepresentation
bin1100101010000…
…11010100101001
321101210121020001
412111003110221
5204140310204
614311503001
72426350210
oct625032451
9241717201
10106181929
1154a34067
122b687a61
1318cc9559
1410160077
1594c64a4
hex6543529

106181929 has 4 divisors (see below), whose sum is σ = 121350784. Its totient is φ = 91013076.

The previous prime is 106181927. The next prime is 106181939. The reversal of 106181929 is 929181601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 929181601 = 9191011079.

It is not a de Polignac number, because 106181929 - 21 = 106181927 is a prime.

It is a super-2 number, since 2×1061819292 = 22549204092322082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106181927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7584417 + ... + 7584430.

It is an arithmetic number, because the mean of its divisors is an integer number (30337696).

Almost surely, 2106181929 is an apocalyptic number.

It is an amenable number.

106181929 is a deficient number, since it is larger than the sum of its proper divisors (15168855).

106181929 is an equidigital number, since it uses as much as digits as its factorization.

106181929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15168854.

The product of its (nonzero) digits is 7776, while the sum is 37.

The square root of 106181929 is about 10304.4616065081. The cubic root of 106181929 is about 473.5329495396.

The spelling of 106181929 in words is "one hundred six million, one hundred eighty-one thousand, nine hundred twenty-nine".

Divisors: 1 7 15168847 106181929