26628031 has 4 divisors (see below), whose sum is σ = 26646592. Its totient is φ = 26609472.

The previous prime is 26628029. The next prime is 26628047. The reversal of 26628031 is 13082662.

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 26628031 - 2¹ = 26628029 is a prime.

It is a super-2 number, since 2×26628031² = 1418104069873922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26628071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6930 + ... + 10063.

It is an arithmetic number, because the mean of its divisors is an integer number (6661648).

Almost surely, 2^26628031 is an apocalyptic number.

26628031 is a deficient number, since it is larger than the sum of its proper divisors (18561).

26628031 is a wasteful number, since it uses less digits than its factorization.

26628031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18560.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 26628031 is about 5160.2355566389. The cubic root of 26628031 is about 298.6159616492.

The spelling of 26628031 in words is "twenty-six million, six hundred twenty-eight thousand, thirty-one".