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76673131 = 510115031
BaseRepresentation
bin1001001000111…
…11000001101011
312100021101202121
410210133001223
5124112020011
611335212111
71620465553
oct444370153
9170241677
1076673131
113a309727
1221817037
1312b67022
14a27c163
156ae7e71
hex491f06b

76673131 has 4 divisors (see below), whose sum is σ = 76693264. Its totient is φ = 76653000.

The previous prime is 76673117. The next prime is 76673173. The reversal of 76673131 is 13137667.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13137667 = 29453023.

It is a cyclic number.

It is not a de Polignac number, because 76673131 - 215 = 76640363 is a prime.

It is a super-2 number, since 2×766731312 = 11757538034686322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76673231) 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 3 ways as a sum of consecutive naturals, for example, 2415 + ... + 12616.

It is an arithmetic number, because the mean of its divisors is an integer number (19173316).

Almost surely, 276673131 is an apocalyptic number.

76673131 is a deficient number, since it is larger than the sum of its proper divisors (20133).

76673131 is a wasteful number, since it uses less digits than its factorization.

76673131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20132.

The product of its digits is 15876, while the sum is 34.

The square root of 76673131 is about 8756.3194893745. The cubic root of 76673131 is about 424.8292388961.

The spelling of 76673131 in words is "seventy-six million, six hundred seventy-three thousand, one hundred thirty-one".

Divisors: 1 5101 15031 76673131