26724989 has 16 divisors (see below), whose sum is σ = 28600320. Its totient is φ = 24935040.

The previous prime is 26724977. The next prime is 26725019. The reversal of 26724989 is 98942762.

It is not a de Polignac number, because 26724989 - 2¹² = 26720893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26724949) 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, 119732 + ... + 119954.

It is an arithmetic number, because the mean of its divisors is an integer number (1787520).

Almost surely, 2^26724989 is an apocalyptic number.

It is an amenable number.

26724989 is a deficient number, since it is larger than the sum of its proper divisors (1875331).

26724989 is a wasteful number, since it uses less digits than its factorization.

26724989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380.

The product of its digits is 435456, while the sum is 47.

The square root of 26724989 is about 5169.6217463176. The cubic root of 26724989 is about 298.9779628281.

The spelling of 26724989 in words is "twenty-six million, seven hundred twenty-four thousand, nine hundred eighty-nine".