26640036 has 96 divisors (see below), whose sum is σ = 72934400. Its totient is φ = 8398080.

The previous prime is 26640017. The next prime is 26640041. The reversal of 26640036 is 63004662.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 26639991 and 26640009.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 244350 + ... + 244458.

Almost surely, 2^26640036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26640036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36467200).

26640036 is an abundant number, since it is smaller than the sum of its proper divisors (46294364).

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

26640036 is a wasteful number, since it uses less digits than its factorization.

26640036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 26640036 is about 5161.3986476536. The cubic root of 26640036 is about 298.6608309827.

Adding to 26640036 its reverse (63004662), we get a palindrome (89644698).

The spelling of 26640036 in words is "twenty-six million, six hundred forty thousand, thirty-six".