26861312 has 36 divisors (see below), whose sum is σ = 53949336. Its totient is φ = 13347840.

The previous prime is 26861311. The next prime is 26861321. The reversal of 26861312 is 21316862.

It is a super-2 number, since 2×26861312² = 1443060164722688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26861311) 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, 80987 + ... + 81317.

Almost surely, 2^26861312 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 26861312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26974668).

26861312 is an abundant number, since it is smaller than the sum of its proper divisors (27088024).

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

26861312 is an equidigital number, since it uses as much as digits as its factorization.

26861312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 650 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 26861312 is about 5182.7899822393. The cubic root of 26861312 is about 299.4854587362.

The spelling of 26861312 in words is "twenty-six million, eight hundred sixty-one thousand, three hundred twelve".