26806983 has 16 divisors (see below), whose sum is σ = 42625536. Its totient is φ = 14652000.

The previous prime is 26806979. The next prime is 26806993. The reversal of 26806983 is 38960862.

It is not a de Polignac number, because 26806983 - 2² = 26806979 is a prime.

It is a super-2 number, since 2×26806983² = 1437228675124578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26806903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27268 + ... + 28233.

It is an arithmetic number, because the mean of its divisors is an integer number (2664096).

Almost surely, 2^26806983 is an apocalyptic number.

26806983 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

26806983 is a deficient number, since it is larger than the sum of its proper divisors (15818553).

26806983 is a wasteful number, since it uses less digits than its factorization.

26806983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55534.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 26806983 is about 5177.5460403554. The cubic root of 26806983 is about 299.2834119235.

The spelling of 26806983 in words is "twenty-six million, eight hundred six thousand, nine hundred eighty-three".