26513998 has 12 divisors (see below), whose sum is σ = 46264392. Its totient is φ = 11363100.

The previous prime is 26513983. The next prime is 26514013. The reversal of 26513998 is 89931562.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (26513983) and next prime (26514013).

It is a congruent number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 135178 + ... + 135373.

It is an arithmetic number, because the mean of its divisors is an integer number (3855366).

Almost surely, 2^26513998 is an apocalyptic number.

26513998 is a deficient number, since it is larger than the sum of its proper divisors (19750394).

26513998 is a wasteful number, since it uses less digits than its factorization.

26513998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270567 (or 270560 counting only the distinct ones).

The product of its digits is 116640, while the sum is 43.

The square root of 26513998 is about 5149.1744969461. The cubic root of 26513998 is about 298.1890831890.

The spelling of 26513998 in words is "twenty-six million, five hundred thirteen thousand, nine hundred ninety-eight".