82146869 has 32 divisors (see below), whose sum is σ = 102727680. Its totient is φ = 64152000.

The previous prime is 82146863. The next prime is 82146893. The reversal of 82146869 is 96864128.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 82146869 - 2⁴ = 82146853 is a prime.

It is a super-2 number, since 2×82146869² = 13496216173006322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82146863) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 543944 + ... + 544094.

It is an arithmetic number, because the mean of its divisors is an integer number (3210240).

Almost surely, 2^82146869 is an apocalyptic number.

It is an amenable number.

82146869 is a deficient number, since it is larger than the sum of its proper divisors (20580811).

82146869 is a wasteful number, since it uses less digits than its factorization.

82146869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321.

The product of its digits is 165888, while the sum is 44.

The square root of 82146869 is about 9063.4909940927. The cubic root of 82146869 is about 434.7073717818.

The spelling of 82146869 in words is "eighty-two million, one hundred forty-six thousand, eight hundred sixty-nine".