26887765 has 8 divisors (see below), whose sum is σ = 32296248. Its totient is φ = 21489600.

The previous prime is 26887753. The next prime is 26887811. The reversal of 26887765 is 56778862.

It can be written as a sum of positive squares in 4 ways, for example, as 8242641 + 18645124 = 2871^2 + 4318^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-26887765 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5415 + ... + 9115.

It is an arithmetic number, because the mean of its divisors is an integer number (4037031).

Almost surely, 2^26887765 is an apocalyptic number.

It is an amenable number.

26887765 is a deficient number, since it is larger than the sum of its proper divisors (5408483).

26887765 is a wasteful number, since it uses less digits than its factorization.

26887765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5159.

The product of its digits is 1128960, while the sum is 49.

The square root of 26887765 is about 5185.3413580978. The cubic root of 26887765 is about 299.5837375004.

The spelling of 26887765 in words is "twenty-six million, eight hundred eighty-seven thousand, seven hundred sixty-five".