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76868269 = 547140527
BaseRepresentation
bin1001001010011…
…10101010101101
312100122022102221
410211032222231
5124134241034
611343315341
71622240512
oct445165255
9170568387
1076868269
113a4322a5
12218abb51
1312c04aaa
14a2cd309
156b35bb4
hex494eaad

76868269 has 4 divisors (see below), whose sum is σ = 77009344. Its totient is φ = 76727196.

The previous prime is 76868249. The next prime is 76868279. The reversal of 76868269 is 96286867.

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: 96286867 = 273135257.

It is a cyclic number.

It is not a de Polignac number, because 76868269 - 29 = 76867757 is a prime.

It is a super-2 number, since 2×768682692 = 11817461558112722, 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 (76868249) 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, 69717 + ... + 70810.

It is an arithmetic number, because the mean of its divisors is an integer number (19252336).

Almost surely, 276868269 is an apocalyptic number.

It is an amenable number.

76868269 is a deficient number, since it is larger than the sum of its proper divisors (141075).

76868269 is a wasteful number, since it uses less digits than its factorization.

76868269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141074.

The product of its digits is 1741824, while the sum is 52.

The square root of 76868269 is about 8767.4551039626. The cubic root of 76868269 is about 425.1893393960.

The spelling of 76868269 in words is "seventy-six million, eight hundred sixty-eight thousand, two hundred sixty-nine".

Divisors: 1 547 140527 76868269