26440146 has 12 divisors (see below), whose sum is σ = 57287022. Its totient is φ = 8813376.

The previous prime is 26440129. The next prime is 26440159. The reversal of 26440146 is 64104462.

26440146 is a `hidden beast` number, since 2 + 644 + 0 + 14 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 24890121 + 1550025 = 4989^2 + 1245^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 734431 + ... + 734466.

Almost surely, 2^26440146 is an apocalyptic number.

26440146 is an abundant number, since it is smaller than the sum of its proper divisors (30846876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26440146 is a wasteful number, since it uses less digits than its factorization.

26440146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468905 (or 1468902 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 26440146 is about 5141.9982497080. The cubic root of 26440146 is about 297.9119674505.

The spelling of 26440146 in words is "twenty-six million, four hundred forty thousand, one hundred forty-six".