26812945 has 8 divisors (see below), whose sum is σ = 32203944. Its totient is φ = 21431424.

The previous prime is 26812943. The next prime is 26812957. The reversal of 26812945 is 54921862.

It can be written as a sum of positive squares in 4 ways, for example, as 5588496 + 21224449 = 2364^2 + 4607^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 26812945 - 2¹ = 26812943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26812943) 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, 7957 + ... + 10813.

It is an arithmetic number, because the mean of its divisors is an integer number (4025493).

Almost surely, 2^26812945 is an apocalyptic number.

It is an amenable number.

26812945 is a deficient number, since it is larger than the sum of its proper divisors (5390999).

26812945 is a wasteful number, since it uses less digits than its factorization.

26812945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4739.

The product of its digits is 34560, while the sum is 37.

The square root of 26812945 is about 5178.1217637286. The cubic root of 26812945 is about 299.3055976283.

The spelling of 26812945 in words is "twenty-six million, eight hundred twelve thousand, nine hundred forty-five".