26431216 has 40 divisors (see below), whose sum is σ = 58771040. Its totient is φ = 11280384.

The previous prime is 26431211. The next prime is 26431217. The reversal of 26431216 is 61213462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26431211) 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 in 7 ways as a sum of consecutive naturals, for example, 45520 + ... + 46096.

It is an arithmetic number, because the mean of its divisors is an integer number (1469276).

Almost surely, 2^26431216 is an apocalyptic number.

It is an amenable number.

26431216 is an abundant number, since it is smaller than the sum of its proper divisors (32339824).

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

26431216 is a wasteful number, since it uses less digits than its factorization.

26431216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001 (or 995 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 26431216 is about 5141.1298369133. The cubic root of 26431216 is about 297.8784243499.

Adding to 26431216 its reverse (61213462), we get a palindrome (87644678).

The spelling of 26431216 in words is "twenty-six million, four hundred thirty-one thousand, two hundred sixteen".