26430749 has 4 divisors (see below), whose sum is σ = 27579936. Its totient is φ = 25281564.

The previous prime is 26430743. The next prime is 26430787. The reversal of 26430749 is 94703462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26430749 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 (26430743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574559 + ... + 574604.

It is an arithmetic number, because the mean of its divisors is an integer number (6894984).

Almost surely, 2^26430749 is an apocalyptic number.

It is an amenable number.

26430749 is a deficient number, since it is larger than the sum of its proper divisors (1149187).

26430749 is a wasteful number, since it uses less digits than its factorization.

26430749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149186.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 26430749 is about 5141.0844186806. The cubic root of 26430749 is about 297.8766699844.

It can be divided in two parts, 264 and 30749, that added together give a palindrome (31013).

The spelling of 26430749 in words is "twenty-six million, four hundred thirty thousand, seven hundred forty-nine".