216560026 has 4 divisors (see below), whose sum is σ = 324840042. Its totient is φ = 108280012.

The previous prime is 216559999. The next prime is 216560063. The reversal of 216560026 is 620065612.

216560026 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 175536001 + 41024025 = 13249^2 + 6405^2 .

It is a super-2 number, since 2×216560026² = 93796489722241352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 216559976 and 216560003.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54140005 + ... + 54140008.

Almost surely, 2^216560026 is an apocalyptic number.

216560026 is a deficient number, since it is larger than the sum of its proper divisors (108280016).

216560026 is a wasteful number, since it uses less digits than its factorization.

216560026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108280015.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 216560026 is about 14715.9785947113. The cubic root of 216560026 is about 600.5180950929.

The spelling of 216560026 in words is "two hundred sixteen million, five hundred sixty thousand, twenty-six".