82378538 has 16 divisors (see below), whose sum is σ = 135251424. Its totient is φ = 37319760.

The previous prime is 82378537. The next prime is 82378591. The reversal of 82378538 is 83587328.

It is not an unprimeable number, because it can be changed into a prime (82378537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 656 + ... + 12852.

It is an arithmetic number, because the mean of its divisors is an integer number (8453214).

Almost surely, 2^82378538 is an apocalyptic number.

82378538 is a deficient number, since it is larger than the sum of its proper divisors (52872886).

82378538 is a wasteful number, since it uses less digits than its factorization.

82378538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12517.

The product of its digits is 322560, while the sum is 44.

The square root of 82378538 is about 9076.2623364466. The cubic root of 82378538 is about 435.1156393137.

The spelling of 82378538 in words is "eighty-two million, three hundred seventy-eight thousand, five hundred thirty-eight".