82193788 has 12 divisors (see below), whose sum is σ = 146899872. Its totient is φ = 40222400.

The previous prime is 82193731. The next prime is 82193809. The reversal of 82193788 is 88739128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218413 + ... + 218788.

It is an arithmetic number, because the mean of its divisors is an integer number (12241656).

Almost surely, 2^82193788 is an apocalyptic number.

It is an amenable number.

82193788 is a deficient number, since it is larger than the sum of its proper divisors (64706084).

82193788 is a wasteful number, since it uses less digits than its factorization.

82193788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437252 (or 437250 counting only the distinct ones).

The product of its digits is 193536, while the sum is 46.

The square root of 82193788 is about 9066.0789760513. The cubic root of 82193788 is about 434.7901185074.

The spelling of 82193788 in words is "eighty-two million, one hundred ninety-three thousand, seven hundred eighty-eight".