26861331 has 8 divisors (see below), whose sum is σ = 40931584. Its totient is φ = 15349320.

The previous prime is 26861327. The next prime is 26861339. The reversal of 26861331 is 13316862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26861331 - 2² = 26861327 is a prime.

It is a super-2 number, since 2×26861331² = 1443062206183122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26861339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 639535 + ... + 639576.

It is an arithmetic number, because the mean of its divisors is an integer number (5116448).

Almost surely, 2^26861331 is an apocalyptic number.

26861331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

26861331 is a deficient number, since it is larger than the sum of its proper divisors (14070253).

26861331 is a wasteful number, since it uses less digits than its factorization.

26861331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279121.

The product of its digits is 5184, while the sum is 30.

The square root of 26861331 is about 5182.7918152285. The cubic root of 26861331 is about 299.4855293486.

The spelling of 26861331 in words is "twenty-six million, eight hundred sixty-one thousand, three hundred thirty-one".