216320522 has 16 divisors (see below), whose sum is σ = 354220992. Its totient is φ = 98260320.

The previous prime is 216320479. The next prime is 216320539. The reversal of 216320522 is 225023612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45083 + ... + 49649.

It is an arithmetic number, because the mean of its divisors is an integer number (22138812).

Almost surely, 2^216320522 is an apocalyptic number.

216320522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

216320522 is a deficient number, since it is larger than the sum of its proper divisors (137900470).

216320522 is a wasteful number, since it uses less digits than its factorization.

216320522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6733.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 216320522 is about 14707.8387943300. The cubic root of 216320522 is about 600.2966329536.

The spelling of 216320522 in words is "two hundred sixteen million, three hundred twenty thousand, five hundred twenty-two".