82748019 has 4 divisors (see below), whose sum is σ = 110330696. Its totient is φ = 55165344.

The previous prime is 82747969. The next prime is 82748023. The reversal of 82748019 is 91084728.

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

It is not a de Polignac number, because 82748019 - 2²⁴ = 65970803 is a prime.

It is a super-2 number, since 2×82748019² = 13694469296848722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82748069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13791334 + ... + 13791339.

It is an arithmetic number, because the mean of its divisors is an integer number (27582674).

Almost surely, 2^82748019 is an apocalyptic number.

82748019 is a deficient number, since it is larger than the sum of its proper divisors (27582677).

82748019 is a wasteful number, since it uses less digits than its factorization.

82748019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27582676.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 82748019 is about 9096.5938130709. The cubic root of 82748019 is about 435.7651903874.

The spelling of 82748019 in words is "eighty-two million, seven hundred forty-eight thousand, nineteen".