Search a number
-
+
76838029 = 125961031
BaseRepresentation
bin1001001010001…
…11010010001101
312100120202221221
410211013102031
5124132304104
611342523341
71622053402
oct445072215
9170522857
1076838029
113a411604
1221896551
1312bc40b8
14a2c22a9
156b2bc54
hex494748d

76838029 has 4 divisors (see below), whose sum is σ = 76900320. Its totient is φ = 76775740.

The previous prime is 76838017. The next prime is 76838051. The reversal of 76838029 is 92083867.

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: 92083867 = 199462733.

It is a cyclic number.

It is not a de Polignac number, because 76838029 - 221 = 74740877 is a prime.

It is a super-3 number, since 3×768380293 (a number of 25 digits) contains 333 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 (76838089) 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, 29257 + ... + 31774.

It is an arithmetic number, because the mean of its divisors is an integer number (19225080).

Almost surely, 276838029 is an apocalyptic number.

It is an amenable number.

76838029 is a deficient number, since it is larger than the sum of its proper divisors (62291).

76838029 is a wasteful number, since it uses less digits than its factorization.

76838029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62290.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 76838029 is about 8765.7303745894. The cubic root of 76838029 is about 425.1335755451.

The spelling of 76838029 in words is "seventy-six million, eight hundred thirty-eight thousand, twenty-nine".

Divisors: 1 1259 61031 76838029