26513988 has 12 divisors (see below), whose sum is σ = 61866000. Its totient is φ = 8837992.

The previous prime is 26513983. The next prime is 26514013. The reversal of 26513988 is 88931562.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (26513983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1104738 + ... + 1104761.

It is an arithmetic number, because the mean of its divisors is an integer number (5155500).

Almost surely, 2^26513988 is an apocalyptic number.

It is an amenable number.

26513988 is an abundant number, since it is smaller than the sum of its proper divisors (35352012).

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

26513988 is a wasteful number, since it uses less digits than its factorization.

26513988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2209506 (or 2209504 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The square root of 26513988 is about 5149.1735259166. The cubic root of 26513988 is about 298.1890457007.

The spelling of 26513988 in words is "twenty-six million, five hundred thirteen thousand, nine hundred eighty-eight".