26601993 has 32 divisors (see below), whose sum is σ = 44014080. Its totient is φ = 15739920.

The previous prime is 26601983. The next prime is 26601997. The reversal of 26601993 is 39910662.

It is not a de Polignac number, because 26601993 - 2⁴ = 26601977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26601997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11730 + ... + 13812.

It is an arithmetic number, because the mean of its divisors is an integer number (1375440).

Almost surely, 2^26601993 is an apocalyptic number.

It is an amenable number.

26601993 is a deficient number, since it is larger than the sum of its proper divisors (17412087).

26601993 is a wasteful number, since it uses less digits than its factorization.

26601993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146 (or 2140 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 26601993 is about 5157.7119927348. The cubic root of 26601993 is about 298.5185968566.

The spelling of 26601993 in words is "twenty-six million, six hundred one thousand, nine hundred ninety-three".