82283781 has 4 divisors (see below), whose sum is σ = 109711712. Its totient is φ = 54855852.

The previous prime is 82283779. The next prime is 82283783. The reversal of 82283781 is 18738228.

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.

It is an interprime number because it is at equal distance from previous prime (82283779) and next prime (82283783).

It is not a de Polignac number, because 82283781 - 2¹ = 82283779 is a prime.

It is a super-2 number, since 2×82283781² = 13541241231311922, which contains 22 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 (82283783) 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, 13713961 + ... + 13713966.

It is an arithmetic number, because the mean of its divisors is an integer number (27427928).

Almost surely, 2^82283781 is an apocalyptic number.

It is an amenable number.

82283781 is a deficient number, since it is larger than the sum of its proper divisors (27427931).

82283781 is a wasteful number, since it uses less digits than its factorization.

82283781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27427930.

The product of its digits is 43008, while the sum is 39.

The square root of 82283781 is about 9071.0407892369. The cubic root of 82283781 is about 434.9487428044.

The spelling of 82283781 in words is "eighty-two million, two hundred eighty-three thousand, seven hundred eighty-one".