26890715 has 4 divisors (see below), whose sum is σ = 32268864. Its totient is φ = 21512568.

The previous prime is 26890693. The next prime is 26890729. The reversal of 26890715 is 51709862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26890715 - 2¹⁶ = 26825179 is a prime.

It is a super-2 number, since 2×26890715² = 1446221106422450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2689067 + ... + 2689076.

It is an arithmetic number, because the mean of its divisors is an integer number (8067216).

Almost surely, 2^26890715 is an apocalyptic number.

26890715 is a deficient number, since it is larger than the sum of its proper divisors (5378149).

26890715 is an equidigital number, since it uses as much as digits as its factorization.

26890715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5378148.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 26890715 is about 5185.6258060142. The cubic root of 26890715 is about 299.5946934092.

The spelling of 26890715 in words is "twenty-six million, eight hundred ninety thousand, seven hundred fifteen".