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82629143 = 390721149
BaseRepresentation
bin1001110110011…
…01001000010111
312202110222212122
410323031020113
5132123113033
612111010155
72022223202
oct473151027
9182428778
1082629143
1142707553
122380995b
1314170cac
14ad8c939
1573c2a98
hex4ecd217

82629143 has 4 divisors (see below), whose sum is σ = 82654200. Its totient is φ = 82604088.

The previous prime is 82629097. The next prime is 82629191. The reversal of 82629143 is 34192628.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82629143 - 212 = 82625047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82629343) 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, 6668 + ... + 14481.

It is an arithmetic number, because the mean of its divisors is an integer number (20663550).

Almost surely, 282629143 is an apocalyptic number.

82629143 is a deficient number, since it is larger than the sum of its proper divisors (25057).

82629143 is a wasteful number, since it uses less digits than its factorization.

82629143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25056.

The product of its digits is 20736, while the sum is 35.

The square root of 82629143 is about 9090.0573705560. The cubic root of 82629143 is about 435.5564166124.

It can be divided in two parts, 8262914 and 3, that multiplied together give a palindrome (24788742).

The spelling of 82629143 in words is "eighty-two million, six hundred twenty-nine thousand, one hundred forty-three".

Divisors: 1 3907 21149 82629143