82216403 has 4 divisors (see below), whose sum is σ = 87052680. Its totient is φ = 77380128.

The previous prime is 82216319. The next prime is 82216417. The reversal of 82216403 is 30461228.

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

It is a cyclic number.

It is not a de Polignac number, because 82216403 - 2²² = 78022099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82216423) 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, 2418113 + ... + 2418146.

It is an arithmetic number, because the mean of its divisors is an integer number (21763170).

Almost surely, 2^82216403 is an apocalyptic number.

82216403 is a deficient number, since it is larger than the sum of its proper divisors (4836277).

82216403 is a wasteful number, since it uses less digits than its factorization.

82216403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4836276.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 82216403 is about 9067.3261218509. The cubic root of 82216403 is about 434.8299912565.

The spelling of 82216403 in words is "eighty-two million, two hundred sixteen thousand, four hundred three".