82869540 has 48 divisors (see below), whose sum is σ = 249885888. Its totient is φ = 20398464.

The previous prime is 82869533. The next prime is 82869551. The reversal of 82869540 is 4596828.

It is a junction number, because it is equal to n+sod(n) for n = 82869492 and 82869501.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 52342 + ... + 53901.

It is an arithmetic number, because the mean of its divisors is an integer number (5205956).

Almost surely, 2^82869540 is an apocalyptic number.

It is an amenable number.

82869540 is an abundant number, since it is smaller than the sum of its proper divisors (167016348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82869540 is a wasteful number, since it uses less digits than its factorization.

82869540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106268 (or 106266 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 82869540 is about 9103.2708407473. The cubic root of 82869540 is about 435.9784028244.

The spelling of 82869540 in words is "eighty-two million, eight hundred sixty-nine thousand, five hundred forty".