26834981 has 4 divisors (see below), whose sum is σ = 26873964. Its totient is φ = 26796000.

The previous prime is 26834971. The next prime is 26834999. The reversal of 26834981 is 18943862.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24900100 + 1934881 = 4990^2 + 1391^2 .

It is a cyclic number.

It is not a de Polignac number, because 26834981 - 2¹⁸ = 26572837 is a prime.

It is a super-2 number, since 2×26834981² = 1440232410540722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26834921) 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, 18440 + ... + 19841.

It is an arithmetic number, because the mean of its divisors is an integer number (6718491).

Almost surely, 2^26834981 is an apocalyptic number.

It is an amenable number.

26834981 is a deficient number, since it is larger than the sum of its proper divisors (38983).

26834981 is an equidigital number, since it uses as much as digits as its factorization.

26834981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38982.

The product of its digits is 82944, while the sum is 41.

The square root of 26834981 is about 5180.2491252835. The cubic root of 26834981 is about 299.3875691307.

The spelling of 26834981 in words is "twenty-six million, eight hundred thirty-four thousand, nine hundred eighty-one".