26213965 has 8 divisors (see below), whose sum is σ = 32224248. Its totient is φ = 20459520.

The previous prime is 26213963. The next prime is 26213969. The reversal of 26213965 is 56931262.

It can be written as a sum of positive squares in 4 ways, for example, as 1671849 + 24542116 = 1293^2 + 4954^2 .

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

It is not a de Polignac number, because 26213965 - 2¹ = 26213963 is a prime.

It is a super-2 number, since 2×26213965² = 1374343922042450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26213965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26213963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63732 + ... + 64141.

It is an arithmetic number, because the mean of its divisors is an integer number (4028031).

Almost surely, 2^26213965 is an apocalyptic number.

It is an amenable number.

26213965 is a deficient number, since it is larger than the sum of its proper divisors (6010283).

26213965 is a wasteful number, since it uses less digits than its factorization.

26213965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127919.

The product of its digits is 19440, while the sum is 34.

The square root of 26213965 is about 5119.9575193550. The cubic root of 26213965 is about 297.0600422016.

The spelling of 26213965 in words is "twenty-six million, two hundred thirteen thousand, nine hundred sixty-five".