26780074 has 4 divisors (see below), whose sum is σ = 40170114. Its totient is φ = 13390036.

The previous prime is 26780069. The next prime is 26780077. The reversal of 26780074 is 47008762.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47008762 = 2 ⋅23504381.

It can be written as a sum of positive squares in only one way, i.e., 15657849 + 11122225 = 3957^2 + 3335^2 .

It is not an unprimeable number, because it can be changed into a prime (26780077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6695017 + ... + 6695020.

Almost surely, 2^26780074 is an apocalyptic number.

26780074 is a deficient number, since it is larger than the sum of its proper divisors (13390040).

26780074 is a wasteful number, since it uses less digits than its factorization.

26780074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13390039.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 26780074 is about 5174.9467630112. The cubic root of 26780074 is about 299.1832376079.

The spelling of 26780074 in words is "twenty-six million, seven hundred eighty thousand, seventy-four".