26730866 has 16 divisors (see below), whose sum is σ = 42819840. Its totient is φ = 12487440.

The previous prime is 26730863. The next prime is 26730877. The reversal of 26730866 is 66803762.

26730866 = T₇₄₀ + T₇₄₁ + ... + T₈₂₆.

It is not an unprimeable number, because it can be changed into a prime (26730863) 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, 5636 + ... + 9231.

It is an arithmetic number, because the mean of its divisors is an integer number (2676240).

Almost surely, 2^26730866 is an apocalyptic number.

26730866 is a deficient number, since it is larger than the sum of its proper divisors (16088974).

26730866 is a wasteful number, since it uses less digits than its factorization.

26730866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14929.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 26730866 is about 5170.1901319004. The cubic root of 26730866 is about 298.9998769588. Note that the first 3 decimals are identical.

The spelling of 26730866 in words is "twenty-six million, seven hundred thirty thousand, eight hundred sixty-six".