82400222 has 4 divisors (see below), whose sum is σ = 123600336. Its totient is φ = 41200110.

The previous prime is 82400209. The next prime is 82400231. The reversal of 82400222 is 22200428.

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

It is a junction number, because it is equal to n+sod(n) for n = 82400194 and 82400203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20600054 + ... + 20600057.

It is an arithmetic number, because the mean of its divisors is an integer number (30900084).

Almost surely, 2^82400222 is an apocalyptic number.

82400222 is a deficient number, since it is larger than the sum of its proper divisors (41200114).

82400222 is a wasteful number, since it uses less digits than its factorization.

82400222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41200113.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 82400222 is about 9077.4568024310. The cubic root of 82400222 is about 435.1538135762.

The spelling of 82400222 in words is "eighty-two million, four hundred thousand, two hundred twenty-two".