82991488 has 16 divisors (see below), whose sum is σ = 165334860. Its totient is φ = 41495680.

The previous prime is 82991477. The next prime is 82991527. The reversal of 82991488 is 88419928.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-3 number, since 3×82991488³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324058 + ... + 324313.

Almost surely, 2^82991488 is an apocalyptic number.

It is an amenable number.

82991488 is a deficient number, since it is larger than the sum of its proper divisors (82343372).

82991488 is an equidigital number, since it uses as much as digits as its factorization.

82991488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648385 (or 648373 counting only the distinct ones).

The product of its digits is 331776, while the sum is 49.

The square root of 82991488 is about 9109.9664104759. The cubic root of 82991488 is about 436.1921550110.

The spelling of 82991488 in words is "eighty-two million, nine hundred ninety-one thousand, four hundred eighty-eight".