82074381 has 8 divisors (see below), whose sum is σ = 109617600. Its totient is φ = 54623712.

The previous prime is 82074359. The next prime is 82074409. The reversal of 82074381 is 18347028.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82074381 - 2⁷ = 82074253 is a prime.

It is a super-2 number, since 2×82074381² = 13472408033066322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82074331) 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 7 ways as a sum of consecutive naturals, for example, 21040 + ... + 24633.

It is an arithmetic number, because the mean of its divisors is an integer number (13702200).

Almost surely, 2^82074381 is an apocalyptic number.

It is an amenable number.

82074381 is a deficient number, since it is larger than the sum of its proper divisors (27543219).

82074381 is a wasteful number, since it uses less digits than its factorization.

82074381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46275.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 82074381 is about 9059.4912108793. The cubic root of 82074381 is about 434.5794693977.

The spelling of 82074381 in words is "eighty-two million, seventy-four thousand, three hundred eighty-one".