82380771 has 12 divisors (see below), whose sum is σ = 129812280. Its totient is φ = 49927680.

The previous prime is 82380769. The next prime is 82380773. The reversal of 82380771 is 17708328.

It is an interprime number because it is at equal distance from previous prime (82380769) and next prime (82380773).

It is not a de Polignac number, because 82380771 - 2¹ = 82380769 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82380773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 415966 + ... + 416163.

It is an arithmetic number, because the mean of its divisors is an integer number (10817690).

Almost surely, 2^82380771 is an apocalyptic number.

82380771 is a deficient number, since it is larger than the sum of its proper divisors (47431509).

82380771 is a wasteful number, since it uses less digits than its factorization.

82380771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832146 (or 832143 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 82380771 is about 9076.3853488049. The cubic root of 82380771 is about 435.1195707764.

The spelling of 82380771 in words is "eighty-two million, three hundred eighty thousand, seven hundred seventy-one".