87320222 has 16 divisors (see below), whose sum is σ = 146750832. Its totient is φ = 38617920.

The previous prime is 87320221. The next prime is 87320243. The reversal of 87320222 is 22202378.

It is a junction number, because it is equal to n+sod(n) for n = 87320191 and 87320200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87320221) 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, 52823 + ... + 54450.

It is an arithmetic number, because the mean of its divisors is an integer number (9171927).

Almost surely, 2^87320222 is an apocalyptic number.

87320222 is a deficient number, since it is larger than the sum of its proper divisors (59430610).

87320222 is a wasteful number, since it uses less digits than its factorization.

87320222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107323.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 87320222 is about 9344.5289875948. The cubic root of 87320222 is about 443.6477436272.

The spelling of 87320222 in words is "eighty-seven million, three hundred twenty thousand, two hundred twenty-two".