26880398 has 4 divisors (see below), whose sum is σ = 40320600. Its totient is φ = 13440198.

The previous prime is 26880397. The next prime is 26880407. The reversal of 26880398 is 89308862.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26880397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6720098 + ... + 6720101.

It is an arithmetic number, because the mean of its divisors is an integer number (10080150).

Almost surely, 2^26880398 is an apocalyptic number.

26880398 is a deficient number, since it is larger than the sum of its proper divisors (13440202).

26880398 is a wasteful number, since it uses less digits than its factorization.

26880398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13440201.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 26880398 is about 5184.6309415425. The cubic root of 26880398 is about 299.5563739394.

The spelling of 26880398 in words is "twenty-six million, eight hundred eighty thousand, three hundred ninety-eight".