82521416 has 16 divisors (see below), whose sum is σ = 155068800. Its totient is φ = 41169744.

The previous prime is 82521403. The next prime is 82521457. The reversal of 82521416 is 61412528.

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 3 ways as a sum of consecutive naturals, for example, 7436 + ... + 14843.

It is an arithmetic number, because the mean of its divisors is an integer number (9691800).

Almost surely, 2^82521416 is an apocalyptic number.

It is an amenable number.

82521416 is a deficient number, since it is larger than the sum of its proper divisors (72547384).

82521416 is a wasteful number, since it uses less digits than its factorization.

82521416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22748 (or 22744 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 82521416 is about 9084.1298977943. The cubic root of 82521416 is about 435.3670500435.

The spelling of 82521416 in words is "eighty-two million, five hundred twenty-one thousand, four hundred sixteen".