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76105381 = 118638017
BaseRepresentation
bin1001000100101…
…00011010100101
312022012112221211
410202110122211
5123440333011
611315111421
71612612402
oct442243245
9168175854
1076105381
1139a61110
12215a2571
13129c8791
14a1712a9
156a34b21
hex48946a5

76105381 has 8 divisors (see below), whose sum is σ = 83130624. Its totient is φ = 69097920.

The previous prime is 76105373. The next prime is 76105423. The reversal of 76105381 is 18350167.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 76105381 - 23 = 76105373 is a prime.

It is a super-2 number, since 2×761053812 = 11584058034310322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76105301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5485 + ... + 13501.

It is an arithmetic number, because the mean of its divisors is an integer number (10391328).

Almost surely, 276105381 is an apocalyptic number.

It is an amenable number.

76105381 is a deficient number, since it is larger than the sum of its proper divisors (7025243).

76105381 is a wasteful number, since it uses less digits than its factorization.

76105381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8891.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 76105381 is about 8723.8398082496. The cubic root of 76105381 is about 423.7780466581.

The spelling of 76105381 in words is "seventy-six million, one hundred five thousand, three hundred eighty-one".

Divisors: 1 11 863 8017 9493 88187 6918671 76105381