82915388 has 6 divisors (see below), whose sum is σ = 145101936. Its totient is φ = 41457692.

The previous prime is 82915387. The next prime is 82915397. The reversal of 82915388 is 88351928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82915387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10364420 + ... + 10364427.

It is an arithmetic number, because the mean of its divisors is an integer number (24183656).

Almost surely, 2^82915388 is an apocalyptic number.

It is an amenable number.

82915388 is a deficient number, since it is larger than the sum of its proper divisors (62186548).

82915388 is a wasteful number, since it uses less digits than its factorization.

82915388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20728851 (or 20728849 counting only the distinct ones).

The product of its digits is 138240, while the sum is 44.

The square root of 82915388 is about 9105.7887082888. The cubic root of 82915388 is about 436.0587904338.

The spelling of 82915388 in words is "eighty-two million, nine hundred fifteen thousand, three hundred eighty-eight".