26861728 has 12 divisors (see below), whose sum is σ = 52884090. Its totient is φ = 13430848.

The previous prime is 26861719. The next prime is 26861729. The reversal of 26861728 is 82716862.

It can be written as a sum of positive squares in only one way, i.e., 21790224 + 5071504 = 4668^2 + 2252^2 .

It is a super-2 number, since 2×26861728² = 1443104862291968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26861729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419683 + ... + 419746.

Almost surely, 2^26861728 is an apocalyptic number.

It is an amenable number.

26861728 is a deficient number, since it is larger than the sum of its proper divisors (26022362).

26861728 is an equidigital number, since it uses as much as digits as its factorization.

26861728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839439 (or 839431 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 26861728 is about 5182.8301149083. The cubic root of 26861728 is about 299.4870047678.

The spelling of 26861728 in words is "twenty-six million, eight hundred sixty-one thousand, seven hundred twenty-eight".