26520434 has 4 divisors (see below), whose sum is σ = 39780654. Its totient is φ = 13260216.

The previous prime is 26520433. The next prime is 26520457. The reversal of 26520434 is 43402562.

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., 24552025 + 1968409 = 4955^2 + 1403^2 .

It is not an unprimeable number, because it can be changed into a prime (26520433) by changing a digit.

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 as a sum of consecutive naturals, namely, 6630107 + ... + 6630110.

Almost surely, 2^26520434 is an apocalyptic number.

26520434 is a deficient number, since it is larger than the sum of its proper divisors (13260220).

26520434 is a wasteful number, since it uses less digits than its factorization.

26520434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13260219.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 26520434 is about 5149.7994135694. The cubic root of 26520434 is about 298.2132086802.

Adding to 26520434 its reverse (43402562), we get a palindrome (69922996).

The spelling of 26520434 in words is "twenty-six million, five hundred twenty thousand, four hundred thirty-four".