82240819 has 2 divisors, whose sum is σ = 82240820. Its totient is φ = 82240818.

The previous prime is 82240813. The next prime is 82240831. The reversal of 82240819 is 91804228.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82240819 - 2¹⁵ = 82208051 is a prime.

It is a super-2 number, since 2×82240819² = 13527104619581522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (82240813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41120409 + 41120410.

It is an arithmetic number, because the mean of its divisors is an integer number (41120410).

Almost surely, 2^82240819 is an apocalyptic number.

82240819 is a deficient number, since it is larger than the sum of its proper divisors (1).

82240819 is an equidigital number, since it uses as much as digits as its factorization.

82240819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 82240819 is about 9068.6723945680. The cubic root of 82240819 is about 434.8730311605.

The spelling of 82240819 in words is "eighty-two million, two hundred forty thousand, eight hundred nineteen".