82403638 has 4 divisors (see below), whose sum is σ = 123605460. Its totient is φ = 41201818.

The previous prime is 82403621. The next prime is 82403653. The reversal of 82403638 is 83630428.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 20600908 + ... + 20600911.

It is an arithmetic number, because the mean of its divisors is an integer number (30901365).

Almost surely, 2^82403638 is an apocalyptic number.

82403638 is a deficient number, since it is larger than the sum of its proper divisors (41201822).

82403638 is a wasteful number, since it uses less digits than its factorization.

82403638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41201821.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 82403638 is about 9077.6449589087. The cubic root of 82403638 is about 435.1598267675.

The spelling of 82403638 in words is "eighty-two million, four hundred three thousand, six hundred thirty-eight".