26406004 has 6 divisors (see below), whose sum is σ = 46210514. Its totient is φ = 13203000.

The previous prime is 26405993. The next prime is 26406041. The reversal of 26406004 is 40060462.

It can be written as a sum of positive squares in only one way, i.e., 25200400 + 1205604 = 5020^2 + 1098^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 3300747 + ... + 3300754.

Almost surely, 2^26406004 is an apocalyptic number.

It is an amenable number.

26406004 is a deficient number, since it is larger than the sum of its proper divisors (19804510).

26406004 is a wasteful number, since it uses less digits than its factorization.

26406004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6601505 (or 6601503 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 26406004 is about 5138.6772617085. The cubic root of 26406004 is about 297.7836815781.

Adding to 26406004 its reverse (40060462), we get a palindrome (66466466).

The spelling of 26406004 in words is "twenty-six million, four hundred six thousand, four".