26401236 has 12 divisors (see below), whose sum is σ = 61602912. Its totient is φ = 8800408.

The previous prime is 26401229. The next prime is 26401259. The reversal of 26401236 is 63210462.

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

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 in 3 ways as a sum of consecutive naturals, for example, 1100040 + ... + 1100063.

It is an arithmetic number, because the mean of its divisors is an integer number (5133576).

Almost surely, 2^26401236 is an apocalyptic number.

It is an amenable number.

26401236 is an abundant number, since it is smaller than the sum of its proper divisors (35201676).

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

26401236 is a wasteful number, since it uses less digits than its factorization.

26401236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200110 (or 2200108 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 26401236 is about 5138.2133081452. The cubic root of 26401236 is about 297.7657573962.

Adding to 26401236 its reverse (63210462), we get a palindrome (89611698).

The spelling of 26401236 in words is "twenty-six million, four hundred one thousand, two hundred thirty-six".